- Email: [email protected]
A=184
A
=
184
Ta, W, Re, Os, Ir, Pt
Compiled by M. J. Martin, December 1965 Replacement for pages 6 0 - 1 - 1 4 2 through 6 0 - 1 - 1 5 0 and 6-:2,3-289 and 6 - 2 , 3 - 2 9 0 of Nuclear Data Sheets
Level schemes, compilers' analysis sheets, and data sheets follow immediately. References, explanations of conventions, symbols, and abbreviations are at the back of this issue. P o l i c i e s and bases for spin-parity assignments are described in the front of the first issue of each volume. Explanation of report identifications (BNL, ISC, etc.) and a list of USAEC Depository Libraries in countries outside the USA through which reports may be obtained are given with the reference section of the first issue of each volume. References to reports are not used if a journal reference is available. P l e a s e refer to a specific Nuclear Data Sheet by using the number at the bottom of the page in the following way: Nuclear Data B1-1-69 (1956).
BI-I-63
A =184
Drawing I ~70 9.~176 ....... 183Hf + p +o~
7.702
~,6 ~ ~~176176176176176176176 1831"0§ n
t-
0
O-
47.8
"'"t~'x;22
:o;,:;.... ....
ffi30s+ n ~
4t
4o~o
~q+"
9;: .......... .&~#
+ .+ + + + ~ + +.++oo.~ ~ N
J~...,?:~s .............
..7.4~ .........
.................... ~6..
tB3W+ n
t83Re + P ~5.0
9q
...... row:. ;.
78
t06
184 7711"107
~'hT
4X
(~0+)~r~)rb'
el.88
(
See Drawing 2 1
T
(5")
87h
4.5
m2.48
//',.\
,.,,o ~o,.,., . / 1.170 80Z, 6.7
(6+)
- ' ~ rZo.r.t,~o
(4+)
t -o~'(~ zo38~g)
m2.12
.,.\\ tl Ez+0.46
~.;,~
.~u-~
~I~
mo~u
2.
"
lWa~d'
0§
J m4_ / / "::Re.__
/ ,____~
~"
v I
0
Stablei~Osi~
9-*o I
__.gz. / ~
. . . . . J- 1.287 -- 12OT.J-l~"~
,,+
(2)
(446;rN-
,o+.+.+,
TM(HO
C 3" 2* K=2
10.73,7N,7..6 )
bklm ~x~m0.9042I~<1.9ps
x-rib (6+)
O!r462
4+
bhko.3r=40
2+
bhk|m01112
t.26ns
~
9+ t84.
Stable
74W|10 B1-1-64
FI~2 Coulomb excitation with I l~ht ions (A~4) h heavy ions (A>4) b (d,p) k (n,n') rn (n,y) r (=,4n) z (p,2n) B,C,D,E,F Comments X T,s omitted
!
-t.
Drowing 2 A=184 B,F
"-r i
(5-) 184_ 731011 t
Comments
Tronsitions per tOO decoys of m ~-d telRe 8.7-h is4 To / t65-d tel Re i ),,s ploced twice
t18.7 h /
0r (8")00~ O'~eO 165d
,
I.lt0/20S, Z3,' ~ t.170/80S,67! /
~
t t t
/
~'
j.~..
m
t4
(0,1,2)
t3
14")
/
/
e" o" c~,o47
,, /
,,,:
te4R e
o
t5
~,~ T
. _
'1;~.
,.., II
1.222 1.207
~-F-r ::5"
1.2 IO,I,2)
II
J,J~"
(2) .~19tB
/(4-~,
,4;~
II t
1.6
7
~.+o,,,
.-,.1 - -
/
I,t6
(4"}
,20S,80) t.t0
I.I ##
, 77~,7.6 )
o,__zo , //
(0,t,2}
',.~
t.0
:).9
0.8
:
2"
:
)"- rib
l
/
I
(6+) '
0.7
I IIII" ~"
0.6
.
.
.
.
.
< 1.gps
0.7482
g
0.5 0.4
.
44
0.3640
-!~ /d
Q3 Q2 2+ 0.1 -
0
0§ K:O
t"2
; StoNe
t84W 74
||0
BI-I-65
o
.JL
/
~=|84
Compilers' Analysis, Sheet 1
Comments
Comments
C. Level Bands i n 184W
B. 184Ta Decay
continued
of, i m p u r i t y bands and f ( J i J f K ) i s a c o r r e c t i o n f a c t o r which a l l o w s f o r such i m p u r i t i e s i n the bands Ki and Kf. The f a c t o r f, f o r E2 t r a n s i t i o n s i s g i v e n e x p l i c i t l y by 63Di09.
The t r a n s i t i o n i n t e n s i t i e s b a r e been chosen so t h a t I ( 0 . 1 1 1 2 / + 0 . 9 0 4 7 ) =100 p e r 100 184Ta d e c a y s . J u s t a t p r e s s time, new p r e l i m i n a r y r e s u l t s were r e p o r t e d t o us by Johnson and Arcs (65Jo08). T h e i r r e s u l t s were v e r y h e l p f u l i n c o n s t r u c t i n g t h e r e a s o n a b l y c o n s i s t e n t decay scheme shown i n Drawing 2. T h e i r c h i e f f e a t u r e s a r e t h e ~ - c o i n c i dences w i t h t h e 0.460 and 0.413 W's and t h e l a c k of c o i n c i d e n c e s of t h e s e W's w i t h any of t h o s e p l a c e d n e a r t h e Is4W ground s t a t e by Coulomb exc i t a t i o n and 184Re decay. This e s t a b l i s h e d t h e e x i s t e n c e o f a d e l a y > l # s q u i t e h i g h up i n t he l e v e l scheme which was assumed t o be t h e same a s t h a t n o t i c e d by 64Dz07 i n Re decay, h l a c k o f i n t e n s i t y b a l a n c e between t h e W's p r e c e d i n g and f o l l o w i n g t h e d e l a y and t h e f a i l u r e t o o b s e r v e c o i n c i d e n c e s between the 0 . 9 2 2 / and any o t h e r W, e x c e p t t h o s e p l a c e d n e a r ground s t a t e , l e d t o t h e assumption t h a t the delayed s t a t e i s depopulated by a l o w - e n e r g y W not y e t o b s e r v e d or by a O. l l l y and 0 . 0 4 7 ~ i n p a r a l l e l , t h e f i r s t f e e d i n g t h e 1.222 l e v e l and the second t h e 1.287 l e v e l . S i n c e no f u r t h e r e x p e r i m e n t a l e v i d e n c e on t h i s p o i n t i s a v a i l a b l e , a l e v e l w i t h e n e r g y Ex ha s been drawn j u s t above the 1.287 l e v e l . The c o m p i l e r s a r e much i n d e b t e d to Drs. Johnson and h r a s f o r communicating t h e i r r e s u l t s and f o r h e l p f u l d i s c u s s i o n s w i t h r e g a r d to the decay scheme. See Erratum, page B1-I-68.
j"
E(level) Exp.
C o n s t a n t s Used
Calc.
R o t a t i o n a l band b u i l t on t h e ground s t a t e O* 2+ 4* 6+ 8+
0 0,1112 I 0.3640 I 0.7482 5 not s e e n
(0) (0.1112) (0.3640) 0.7481 1.238
A = 0.01867 B = - 2 0 . 5 x i 0 -6 Eo = 0
K =2 y - b a n d b u i l t on t h e ground s t a t e 2§ 3§ 4* 5*
0.9042 5 1.0065 5 1.1350 5 not seen
*Value
(0.90425 (1.0065) 1.1332 1.275
taken from
A* = 0.01867 B =-89.0x10 ~ Eo = 0.7954
ground*state band
B ra nc hi ng of y - b a n d t o g r o u n d - s t a t e band Calc.
Exp. Z=0 B(E2: 2 2 ~ 0 0 )
Z=0.040
0.59
0.70
0.56
0.18
0.05
0.08
1.6
2.5
1.5
O. 17
O. 34
O. 19
B(E2: 2 2 4 2 0 ) B(E2:224405 B(E2:22~20
C. Level Bands in 184W B(E2:324205 B(E2: 3 2 ~ 4 0 )
Comparisons are shown below of experimental level energies with those calculated by compilers from
B(E2:42~205 E(level) = E0§247 ( )'s
2
B(E2:424405
i n d i c a t e v a l u e s used t o d e t e r m i n e c o n s t a n t s D. Decay o f 38-d and 165-d 184Re
Comparisons a r e a l s o shown of e x p e r i m e n t a l reduced b r a n c h i n g r a t i o s d e f i n e d by
B(L:Jt-J )
rE (J'-JfS]
B(L:Ji-Jf) |l~(JCJfSl |%(JCJ~il with the theoretical values.defined by
-B(L. - JiK i4JfKf5 , B(L:JiKi4JfKf)
=
(JiLKIKf_KIlJ;K,5~ (JILKIKf-Ki[JfKf) 2
[/+Zf(JiJ~Z)] x [l§
where t h e p a r a m e t e r Z i s a measure of t h e a d m i x t u r e
The c a l c u l a t i o n of t h e b r a n c h i n g r a t i o s o f t h e i s o m e r i c t r a n s i t i o n was based on t h e a s s u m p t i o n s t h a t t h e 0.1112 and 0 . 9 0 4 y ' s i n 184W a r e t h e o n l y g r o u n d - s t a t e t r a n s i t i o n s fed i n t h i s decay. t h a t s e c u l a r e q u i l i b r i u m has been e s t a b l i s h e d and t h a t t h e 38-d a c t i v i t y o r i g i n a l l y produced has decayed. The h i n d r a n c e f a c t o r f o r t he 0.0834 M4 T, ba s ed on t h e ~ e i s s k o p f e s t i m a t e , i s 90. The t r a n s i t i o n i s once K - f o r b i d d e n (A K -L ~15 and s i n c e each u n i t of K - f o r b l d d e n n e s s c o n t r i b u t e s a r e t a r d a t i o n o f a bout 102 ( s e e 178'18~ t h e above h i n d r a n c e f a c t o r can be a c c o u n t e d f o r . M. J.
B1-1-66
Martin
C o m p i l e r s ' A n a l y s i s , S he e t 2
Comments
D. Decay o f 38-d and 165-d 184Re
Spin A s s i gnme nt s
(continued)
The i n t e n s i t i e s f o r lS4Re 38-d and 165-d a c t i v i t i e s have each been chosen so t h a t I(0.1112y+0.904)') = I00 per 100 d e c a y s o f t b e r e s p e c t i v e p a r e n t s . For th e 38-d decay, t h e i n t e n s i t y b a l a n c e f o r t he 0.9042 and 1.0065 l e v e l s r e q u i r e s 77% and 207~ ~-branching r e s p e c t i v e l y to these l e v e l s . This l e a v e s 3% of t h e Re d e c a y s f o r h i g h e r l e v e l s which i s t o be compared w i t h =5% r e q u i r e d by t h e l e v e l scheme. For th e 165-d decay, a r e a s o n a b l e i n t e n s i t y b a l a n c e f o r the Ex+0.216 l e v e l can be o b t a i n e d by assumi n g the m u l t i p o l a r i t i e s o f t h e 0.216, 0.161 and O . 0 5 5 T ' s shown on t h e l e v e l scheme.
184Tground s t a t e ~3-~111 The 73rd p r o t o n i s 7/2[404] ( s e e J~ = ( 5 - ) 181'183Ta) and the l l l t h n e u t r o n i s 3/21512] (185W) o r 1/21510] (18~0s). The Gallagher-Moszkowski coupling rules predict J~=5- or J~ = 3" The a bs e nc e o f f l ' s t o t h e g . s . band or T-band f a v o r s 5-
184w 0.1112 l e v e l 74-110 j~ = 2+
0.3640 l e v e l j~ = 4+
E. 1840s Level Scheme 1840s l i e s i n t h e t r a n s i t i o n r e g i o n between deformed and s p h e r i c a l n u c l e i , a r e g i o n where t h e Bohr-Mottelson theory i s not expected to y i e l d
j " = (6 +)
0.9o42 level j~ ~ 2+
Parameters used: E(2 +) =0.1198 E(2 +*) =0.923 E(O +') = 1.500 (assumed)
0+ 2+ 4+ 6+ 8+ 10 +
E(level) Exp.
Calc.
0 0.1198 0.3838 0.7750 1.279 1.88
0 0.120 0.384 0.770 1.260 1.S4
Coulomb e x c i t a t i o n
(160,160"T) e x c i t a t i o n f u n c t i o n
0.7482 Ievel
good agreement with experiment. A comparison is sho~n below of experimental level energies with those calculated by compilers using the rotationvibration interaction theory of Faessler and 6reiner (65Fa05).
J~
A - ~84
1.0065 l e v e l j ~ =3 +
1.010 l e v e l J = (0.1.2)
F. 184Re-184W Decay Energy
P o s s i b l e member of g r o u n d - s t a t e r o t a t i o n a l band from e n e r g y f i t and i n e r t i a l p a r a m e t e r s
The 0.793u i s E2§ from a K and K/L.~ J n = l * , 2 + o r 3 + (0.793$)(0.1112)Q(0) i s c o n s i s t e n t w i t h J = 2 , not w i t h J ~ l o r 3
The 0.6424)' i s E2+MI from a K and K/L A J~ =3 +, 4 +. 5 + (0.895T)(O. I l 1 2 y ) ( O ) i s c o n s i s t e n t with J = 3 , not with J = 4 , 5
Level i s fed from a J~ = 1" n e u t r o n r e s o n a n c e .'. J = 0 , I, or 2
From mass-spectroscopic measurements (65Mass), the mass difference between the stable nuclei IS40s and I84W is 1.62 7. If Q+~1840s) --ww0, then Q+(IS4Re) =1.62.
Mass D i f f e r e n c e s The mass d i f f e r e n c e s s h o ~ on t h e l e v e l scheme a r e t a k e n from a l e a s t - s q u a r e s a d j u s t m e n t o f masss p e c t r o m e t e r , r e a c t i o n , and decay d a t a i n t h i s mass r e g i o n . See A d j u s t e d Mass D i f f e r e n c e s , immediately preceding references in this issue, f o r a l i s t o f d a t a used i n t h e a d j u s t m e n t . M. J. Martin
BI-I-67
|
A=18~
Compilers' Analysis, Sheet 3
Spin Assignments
Spin Assignments
184w I 1350 l e v e l 74-110 "" j " ~ (4 +)
1.16 1.39 2.12 2.48
level t level level level
1.222 l e v e l J~ = (2-)
1.287 level j~ = (4 +)
Level decays to 2~. 4§ and 6 + levels Member of T - v i b r a t i o n a l band b u i l t on the 0.9040 level from energy f i t and i n e r t i a l parameters. See Comment C
184n~ 0.1198 level 76vn108 Levels are seen in (a.4rry) r e a c t i o n . j~ = (2 +) This r e a c t i o n i s known to p r e f e r e n t i a l l y e x c i t e l e v e l s in the g r o u n d - s t a t e r o t a t i o n a l band (see 16~ See Comment E f o r comparison o f experimental l e v e l s with those p r e d i c t e d by the 1.88 level rotation-vibration interaction j " = (10 § t h e o r y of 65Fa05
Levels are fed from a J~ = 1n e u t r o n resonance .'. J = 0, 1 o r 2 0,923 level jn = (2 +)
Level feeds 2 § and 3 + but not 0 + or 4 + l e v e l s
Level feeds 2 §
Excited by (p,2nT) r e a c t i o n which a l s o e x c i t e s members of grounds t a t e r o t a t i o n a l band P o s s i b l e band head o f a T - v i b r a t i o n a l band from s y s t e m a t i c s
4 + and 6 + l e v e l s Erratum On Drawing 2, the 1.426 and 1 . 1 7 3 y ' s a r e shown dee x c i t i n g the Ex+ 0.210 l e v e l and f e e d i n g t h e 0.3640 and 0.7482 l e v e l s . These T ' s should o r i g i n a t e a t the 1.537 l e v e l and feed the 0.1112 and 0.3640 l e v e l s .
184~ ground s t a t e ~5-v109 The 75th p r o t o n i s 5/21402]~ (see J~ ~ (3-) 18s'187Re) and the 109th n e u t r o n i s 1/21510]r (see 183Wand laSos) 9~ J " =3- or 2-. The G a l l a g h e r Moszkowski c o u p l i n g r u l e s p r e d i c t J~ = 3" 0.1047 l e v e l
J~ = (4-)
0.1880 l e v e l J= = (8+)
K t o L s u b s h e l l r a t i o s show t h a t the 0.1047)' i s E2~MI P o s s i b l e member of a r o t a t i o n a l band b u i l t on the ground s t a t e
L s u b s h e l l r a t i o s show t h a t the 0.0834y i s M4
M. J. ~lartin
B1-1-68
~84 73Ta,IH -1 G r o u n d - S t a t e Decay
~i
Q'= 2 . 9 I
55B80
8.7 h ~ 8.5 5 ~8.7
= I. II
~2
= 1.17
5.8 w 1.453 1~
x~ 4
1.0 w 1.755 20
0.15w 2.644 28
continued
121 O. 160 scin 55B80 llJ O. 167 scin 60Va24 O. 160 scin 64Ve01 7.21 0.1613 9 double from T)" scmicond 650o08 A0.1612 See 184Re-4
1.51
75
12} 23t 18.0t
0.210 0.213 0.2152 10 A0.216 E1
s c i n 55B80 s c i n 60Va24 semicond 650008 See 184Re-1
0.126 3
xT6
8. D
0.2265 10
semicond 650008
T7
7.5|
0.242 2
semicond 65Jo08
scin ~ . ~T64Ve01
s c i n ~ , ~764Ve01 7 3 . 4 ~ 0.2530 7 ^0.2528 E2
76§ 8 70t 0.240 87t 0.250
s c i n fiT65Jo08
0.245
%
2.3t
0.296 2
semicond 650008
71o
32.3t
0.3182 8 ~0.318
semicond 650008 See 184Re-1
79+1o
Input to Mass Adjustment 65Mass Output from Mass Adjustment 65~lass
=2.9 I
711
41~ 0.300 411 O.314 0.305
16.7t
T(184W) 0.0888 12
351 0. II0 35t 0.113 0.111 29.2t 0.1108 8 AO.III2 E2
scin 55B80 scin 60Va24 scin 64Ve01 semieond 650008 See 184Re-1
tRelatlve photon intensity. 100t corresponds 79 photons per 100 decays
712
0.386 AO.3867
100t
711411"+12
to
llTt l17t
AAdopted value XNot shown on l e v e l
0.3846 13 AO.3842
scin 55B80 scin 60Va24 scin 64Ve01
semicond 650008
See 184Re-1
semicond 650008 711"
72
scin 55B80 scin 60Va24 scin 64Ve01
~-intenslty
Q" = Average of E(/JI) § +E x and E(~2) +E7(0.413) + E x where E x = 1.287 ~ E(isomeric 7) >2.9 =2.9 I by assumption. See Comment B
71
semicond 650008 See 184Re-1
scin fl, ~764VeO1
No ~ with E f l > l . 5 p r e l i m i n a r y r e s u l t
w
semicond 65Jo08
scin ~. ~y 64VeOl
78 x~5
continued
x~/4
From l e v e l scheme
93~ 1.190 I0
/33
73
scin ~ 7 6 5 J o 0 8
(8{~D
fl24~3
7(184g)
6OPol
scin ~ T 650008 From level scheme
(20~)
G r o u n d - S t a t e Decay
scheme
B1-1-69
0.4131 13
0.405 0.413 0.408
scin TT 650008 See 184Re-I
semicond 650008
s c i n 55B80 s c i n 60Va24 s e l n 64Ve01
1
184 75T0111-2 Ground-State Decay 3"(184~) 9"13
continued
0.463 0.4597 12
s c i n 60Va24 semicond 65Jo08
x9"23
1.04t
X~24
1.016 1.091 1-022a3
0.970a3
A0.460 9'14
231 0.528 0.529 18.41 0.5372 9 A0.540
51
scin 60Va24 scin 64Ve01 semicond 65Jo08 See la4Re-I
3"24"
0.638 0.656 1.141 0.642 3 A0.6424 E2§
scin 60Va24 scin 64Ve01 semicond 65Jo08 See 184Re-2
3,25
3"16
1.951 0.770 2 A0.771
semicond 65Jo08 See 184Re-2
X~26
9"17
19.9t
semicond 65Jo08 See 184Re-2
3"15
9"16+17 20t 23t
0.7929 8 A0.793 E2§
0.780 0.784 0.788
3.401
3,27
scin 55080 s c i n 60Va24 scin 64VeOi
89
1.041 0.810 3
semicond 65Jo08
x~/19
0.96i
0.872 ~
semicond 65Jo08
Xy29
3"20
7.6t 14.41
scin 60Va24 semicond 65Jo08 See 184Re-2
3'3o
9"22
3"21§
0.867 0.8958 ~0.895
I0
2 0 . 4 } 0.9042 9 A0.904 E2
semicond 65Jo08 See ]84Re-2
42.1t
semicond 65Jo08 See 184Re-2
0.9218 7 A0.922
0.890 7611 0.910 0.905
AAdopted v a l u e XNot shown on l e v e l
X/31 732
scin 60Va24 semicond 65Jo08
1.064 AI.060
scin 64Ve01 scin3,3"65Jo08
1.089
w 60Va24 scin 64VeOl scmicond 65Jo08
1.105 1.111a2
0.33i
1.154a5
semicond 65Jo08
s c i n 55B80 1.180 s c i n 60Va24 1.152 1.159 s c i n 64Ve01 6.0t 1.173 2 double from 3"T semicond 65Jo08 A1.173 1.215 1.212 0.53t 1.207a4 ^1.207
1.277 1.270
scin 60Va24 scin 64Ve01 semicond 65Jo08
scin 60Va24 scin 64Ve01
1.350 1.321 0.31t 1.315a4 AI.315
scin 60Va24 scin 64Ve01 semicond 65Jo08
0.14t
semicond 65Jo08
1.340a5
scin 60Va24 s c i n 64VeOl 0.38t 1.426 ~ double from WW semicond 65Jo08 AI.426 1.4407 1.440
s c i n 55B80 scin 60Va24 scin 64Ve01
1 R e l a t i v e p h o t o n intensity. 100T corresponds to 79 p h o t o n s p e r I00 d e c a y s
semicond 65Jo08
hall
xTI8
9"21
continued
3"(184W) continued
continued
201 15.61
Ground-State Decay
Other 7 ' s
0.947 1.5507
scin 64Ve01 scin 60Va24
aThc w i d t h of t h i s peak i s b r o a d e r than t h e e x p e c t e d Gausslan distribution
scheme
BI-1-70
t84.,.
75 I(]1tl
Ground-State Decay continued
Ground-State Decay continued
Sum peaks
TT scin
60Va24
scin
0.463 1.016 1.089 1.152
1.440 1.550
-3
scin-semicond 65Jo08
continued
64Ve01
(I.1737)(0.1112. 0.1612)', 0.2528T) 1.005 (1.313)')(0. II12, 0.1612)', 0.25287) (1.426T)(0.1112, 0.1612y)
1.212 1.312 1. 430
No (0.771~)(0.318y) No (0.8955)(0.2528. 0.318T)
(I.19Q~)(E T>0.08, 0.410. 0.900 peaks) (1.453fi)(E T>0.08. 1.173~) (l.755r~)(E T >0.08. 0.410, 0.900 peaks) (2.64{3)(E T > 0.08)
64VeOl 64Ve01 64re01 64Ve01
(= 1.170,.~)(0.413y) (= 1.110~)(0.460y)
653'008 65Jo08
TT-delay
(0.922y)(0.1612, 0.216)') No 184~ level with T,i>l s
~i>l ~s
65J008
Wchem 65Jo08
Assignment
la4W(fast 186W(d,a) p O. 1112y Coulomb
scin 65Jo08
VT
(0.1112y)(0.2528, 0.6424, 0.922, 1.011, l . l l l , 1.173, 1.315, 1.426y) (0.1612~)(0.296T) (0.216y)(0.242T) (0.2528~/)(0.318, 0.3842, 0.540, 0.6424,
0.771, 0.922, 1.060, 1.173, 1.315, 1.426~) (0.318y)(0.540, 0.793. 0.904~) (0.3842y)(0.2528, 0.3867. 0.540, 0.810)9 (0.540"/) (0.2528, 0. 318, 0.3842T) (0.6424y)(0.2265, 0.3185) (0.771~)(0.2528~)
(0.793y)(0.318y) (0.895T)(0.2265T) (0.9045) (0.318Y) (0.922y)(0.2528"/) (l. lllT)(0.1112~)
BI-I-71
n.p) chem chem known to be in Ia4W from excitation
55B8o 64Ve01
184
74Wllo -1 Ground S t a t e
Reaction Data
Abundance ~nA
30.64~ 2.1
59Full 65Sigm
Coulomb E x c i t a t i o n continued 184W(x.x'T) 0.1112 l e v e l continued s
T~ ~ 2x1017y 3x1017y
ET
B(E2)T
x
Ex
60Be13 610r37
a K =0.99 I0 1.26-ns,
j~ /i
0
Coulomb excitation
TT(0,H) 184Re-3 ~y(8, H) 184Re-3 P,T(~,H) 184W-1 p.T(0,H) 184W-I P,T(0,H) 184W-1 182W) = 1.06 15 Moss 64Ch24
Q/Q(0. 1001 l e v e l
162W) = 1.00 25
1.28 ns 8 1.3 4 1.24 ~ 1.28 2 1.14 8 ^ 1 . 2 6 ns
Moss
0.3640 l e v e l j~ =4 + T~ =54 ps
184W-I
0 . 6 2 I0 0.558 3~ 0,408 32 0.560 36 0.574 50 p/p(0. 1001 l e v e l
57M34
0.25 0.246 0.2523 2 (0.246) 0.254 2 A0.2528
62Phl
T T - d e l a y 184Re-3 T ~ - d e l a y 184Re-3 a T - d e l a y 184W-1 p,T(0,H,t) 164W-I Coulomb e x c i t a t i o n 184W-1
0.9042 l e v e l j~ = 2 + T~ = 1.9 ps
0.790 0.780 15 0.780 8 A0.793
Reaction Data
0.900 0.910 15 0.891 9 ^0.904
T 0.07
Coulomb excitation
i f T~=1.26 ns i f T~A= 1.26 ns
p,T(0,H) 620o17 p,T(0,H) 65Eb03 p,W(0,H,t) 65Sc05
ag'-delay 62Bi5 p , T ( 0 , H , t ) 65Sc05 i f B(E2)! =4.0 3 and a = 2.65
B(E2)! x
Ez
Method
2ONe 14N 160 1.6 3 16N 160
27.8 s c i n 60An8 50 semicond 62Afl 14-50 s ce 636r04 37 semicond 64A125 30-44 s c i n 64De07 See 184Re-1
See Spin Assignments i f B(E2)! =0.14, a(0.793~/) =0,0096 and photon c r o s s o v e r / c a s c a d e = 1.32
E7
T 0.06
Coulomb Excitation 164W(x,x'T) 0.1112 level jn ~ 2 +
Excitation function 64A125 i f B(E2)T = 1.6 and a =0.14
E~
EB(E2)T
ffi 1 . 2 4 ns 1.28 2 1.14 8 ^1.26 ns
scin x/y
O. III2-MeV Level
2+
g = 0 . 204 16 O. 280 18 0. 287 25
Method
0. 112 4 p 2,5 s c i n 5&~01 0.116 a 2.75 677 ce 55B25 0.1111 4.1 a p 1.75 sd ce L 56H49 ce L 1.7 O. 11113 6 p 3.7 c r y s t 57C39 4.456~5 p 4.0 s c i o 58M02 T 1.22 t2 0.112 0.112 3.62 20 p , d 4.5 s x" 61Ha21 O. l l l 14N 50 semicond 62Afl 4.30a30 160 14-50 s c i n 63Gr04 5/1.18 8 0.112 I 160 30-44 s c i n 64De07 0.111 ~ p 8 . 5 - 8 . 5 s p" 64Sp03 A0.1112 E2 See 184Re-I
Ground-State Decay
No a
continued
B(E2)!
x
Ex
Method
0.14 b
a 13.1 a 14-20 p 5.0
s c i n 58AI0! s c i n 60Na13 s c i n 61Mcl See lS4Re-I
0,190 55 a 13.1 0.12 b. a 14-20 0.17.5 p 5.0
s c i n 58A101 s c i n 80Na13 s c i n 61Mcl See 154Re-1
IT(0.904T)/IT(0.793y) = 1.32
alf
aL(0.1112T)
bIf
a(0.793T)
= 1 . 5 0 a n d a ( 0 . 1112T) ffi 2 . 6 5
= 0.0096.
a(0.9O4y)
c r o s s o v e r / c a s c a d e = 1.32 AAdopted v a l u e
BI-1-72
s c i n 58A101
=0,0056
and
photon
184 w 11o- 2 Reaction Data
continued
Reaction Data
Resonances
Other Reactions 183W(d~
184W(n,n')
W(n.n'T)
E = 0.3-1.5 tfl 63S~07
E = 3.0 scin 59A130
E(level)
E(level)
E,/
0.11O 0.364 x0,700w 0.890 0.990 Xl.100 Xl.210 Xl.420
0. I l l 5 0,365 10 X0.690w 0.900 30 1.000 30 X1.120 30
E = 15 631s01
s p
Xo.21 x0.38 X0.57 x0,76 x0.92 Xl. 20 Xl.54 x 1.87
3 3 3 3 3 4 4 5
(n,n # ) results See D. Lister, I I , No. I . 29,
do not show
A. B. Smith, BB8 (1966)
the 0.690 Bull.
a b
level.
Am. Phys.
Measured
Eo(eV)
Measured
i I
T.C T.C
650 2 680 2
T,C T,C
2
T.C
698 2
T.C
2 2 2
T,C T,C T,C
727 2 758 2 871 2
T.C T,C T,C
T Transmission
xi.750 w
continued IS3w(n)
Eo(eV)
419 430 461 540 552 607
c
continued
C Capture
S Scattering
O Gammas
Measurement o f r ~ and F n / r ( o r ~ / F ) Use of the i n e q u a l i t y g>GrOE0/2.60XI06 §
Observation of strong gamma to 0
ground state
Soc.
Capture ~ ' s Resonances
183W(n) (183)W(n,T) sn p r 53K45
Resonance parameters adopted by Brookhaven Sigma Center. August 1965. Complete data with r e f e r e n c e s w i l l be p u b l i s h e d by Sigma Center.
En= th
~o
Eo eY
6.4 4 25.5 15
7.65 3 27.13 5 1.2 3 40.60 6 29.3 15 46.08 7 8.0 15 47.8 I 0.45 10 66.0 5 8.0 15 1Ol,0 3 103.9 4 137.8 4 2.1 3 144.5 ~ 3.5 3 155.0 4 4.3 7 157.1 4 2.1 5 174.1 5 192.4 4 203.7 4 228.0 4 236.0 5 240.7 4 244.0 5 259.2 5 280.5 5 297.6 6 323.2 6 337.5 6 349 10
354" 2 361 1 378 I 392 I
F~
I~,
mV
~mV
0.65 4 8.1 4 0.27
6
22.7 9 16.6 14 0.23 2 9.5 10 0.3"I 0.38*4 7.9 15 32 4 4.6 6 30.0 1I 2.5 3
J
70 77 68 69 78 103 120
5 6
10
1 0
20 40
1 I
a,b,c a.b.c b,c a,b,c a,b b,c a, c
120 75 120 170
30 8 30 50
0 O
b b
1 1 1
b,c b b
30
8
I I 1
Method Measured
7 . 5 * 38
11" 2 0.8*3 1.3 3 3.7 6 12 2
2.3 3 5.0 10 1.2'7 11'2 2.8*8 5.7"12 1.5"8
1
c
1
c
I I
c c
I
c
T.C.S. T,C~ T,C, T,C,S, T,C,S T.C, T,C.S T,C T,C T.C T,C T,C T.C T,C T. c T~C T.C T,C T,C T,C T.C
T,C T,C T.C
6 6 6
soin 63Bo30
En(eV) 7.65
d 103 b
scin 58B140
0.6t 2.4t 0.3t
4.94 2 5.304 9 6.02? I
st st ?
0.3t
6.40 5
st
0 . 1 t x6.73 3
?
0.3?
st
En(eV) 7,65 27.13 e
15115 20195 1295 1195
G 7.42 2
f 6.03 6.26 6.40 6.51
3385 3215 6915 -565
86~ 1580~ 7.31 2775t 635 7.41
IPhotons per I00 n-captures in W SRelative values dThese T*s assigned
to 184W because
photons
wlth
approximately these energies were seen at the 7.65 eV resonance by 58B140. See 187W-9 (BI-2) for neutron separation eRelatlve
energies
intensities
and 66.0 eV also f^uthors
give
only
not 7-energles; values.
and all capture T's for resonances
in natural
at 40.60,
W.
46.08,
given.
probable
final
energies
here =7.41
Resolution
poor.
levels
Intensities
in T-transitions
- probable from
level
positions
of complex peaks. XNot shown on level scheme
T,C
Mass-Spectrometer Data
T. C T,C T,C T.C
Mass-Doublet Measurements
"2gr0n r a t h e r than I~0n
B1-1-73
57J08, 60Bh2, 61De21 See 65Mass
I
t84Re -1 75
109 Ground-State
TV3a
38 d 38.0 33 34 A38 d
~+?
weak
Decay
I 5 3 5
= 0.900 Probably
due to electron
scattering
62Dz4 63Dz04
scattering
62Dz4 63Dz04
T2
6650"(L) 5220*. 6380t >2990"
srr c e
0,1112 0,11120 6 0,111 0.111 t 0,111 L:M:N = 1 0 0 0 : 1 5 2 : 3 4 0. U l I 0.1112 2 La/M=I.76 0,11113 6fromCoulombexcit.
srr c e 56T22 sn ce 58617 sein 6013o7 s c e 62Dz4 s'ce 63Bi04 scin 63Jo03 s ~ c e 64Ha06 cryst 57C39
scinTT 58G17 s ce 63Bi04 scin 63Jo03 srr ce 64Ha06
sein TT s ce
58617 62Dz4
0.250 20
sein TT
58617
0 , 2 5 2 8 4 10 sTr ce 0,252 I s ce 0,253 L:M:N = 1 0 0 0 : 2 5 5 : 4 9 s c e 16407 0 , 2 5 3 sein 129' 0.2528 3 L:M=I00O:140 sTr c e 0.2523 2 184W-1 s ce A144, `0.-~-~
58617 62Dz4 63Bi04 63Jo03 64Ha06 636r04
~7
146" 158'
see 184Re-5 0,09733 5
continued
0 . 2 3 0 20 ^ 0 . 2 3 2 20
T6
T(Ia4W) See Assignment, 184Re-3 For additional d a t a , Added i n P r o o f ,
xT l
Decay
T(184W) c o n t i n u e d T5 0 . 2 1 0 20 6.6"(L) 0.220 10601 c 0 . 2 1 7 3 w* 0,2162 3 ^-~,216
60Bo7 62Dz4 63Jo03 65B106
= 1.5 May b e d u e t o e l e c t r o n
~-?
Ground-State
58G17
a
aK
K
L1
1000 1000
b
1OO0
122
L2
L3
2 9 8 ~ 290 b 105
0.36 6 0.14
0.088
216
see 63Bi04 srr e e 64Ha06 sein T/y63Jo03
132
E2 T h e o r y
'o.1112 3/9 a
aK
K
LI
vw 725
vw w
2 . 8 5 35
0.99 0.82
> 640 b > 730 b 10 (5220"/6380t)
L2 w I000 1700~
L3 w 640
srr c e 56T22 srrce 58G17 s ce 63Bi04 scin T/T63Jo03 1000 883 s r r c e 64Ha06 I000 855 See 184Re-4 f r o m Coulomb e x c i t . 57M34
0.70
930
103
X~3 1 5 0 '
O, 151 K - l i n e
xT4
0,186
4
10O0
only seen
880
0,3842
5
sTr ce 64Ha06
T I 1 w*
0,3867 5
srr c e 64Ha06
302?
0,384
5
soin 63Jo03
E2 T h e o r y TI 2 0.540 3,2* 0,5~0 3.4* 341t 0,540 395t 0.539 1.4" 0.5398 A2.7*a368t ^0.540
s ce 63Bi04 scin TT 633003
40 2 5
?Relative
8 a K=0.0073
photon
sein 58617 s ce 62Dz4 s ce 63Bi04 seln 63Jo03 s77 ce 64Ha06 (2.7"/368t)
K/L = 4 K/L = 4 . 2 double from~T
a K=0.0050 0.0133
aThe h i g h v a l u e o f T~ ( = 50d) o b t a i n e d by e a r l y w o r k e r s was p r o b a b l y due to a 183Re i m p u r i t y w i t h T~ = 7Od. See 58617 and 633003 bLlne not fully resolved Cblainly due t o 1 6 5 - d 184Re. T y - i n t e n s l t y d a t a of 6 3 J o 0 3 show t h a t I ( 1 6 5 - d ) / I ( 3 8 - d ) = 4.4 for their source AAdopted v a l u e XNot shown on l e v e l
s c i n T T 58617 scin TT 63Bi04 scin 63Jo03 s r r c e 64Ha06
~ I o w*
~1o§ 2.64
0 . 3 3 0 25 0.322 400t 0.318 3 w* 0,3184 5 ^0,318
intensity
K/L=6.6 4.3 normalized
E1 T h e o r y E2 T h e o r y to 23400t
f o r T20 t o 23 *Relative ceK-intensity (except where noted) n o r m a l i z e d t o 1O0* f o r TI6 t o g i v e aK(O.2578T)= 0.088 (theoretical v a l u e f o r E2) 100t c o r r e s p o n d s t o 0 . 2 5 p h o t o n s p e r 100 d e c a y s
scheme B1-1-74
184Re -P_. 75 109 Ground-State Decay continued
T(la4w) T13
continued 0.6424 6
8.3* 8.2*
0.642 2 990t 0.642 770t 0.641 7 9.4* 0.6425 10 A8.6" A880i A0.6424
a K ffi0.0093 0.0098
Ground-State Decay continued
T(184W)
s~ ce
58G17
continued 0.8992 14
sTz ce 64Ha06
0.9043 9 0.904 2 0.904 0.904 6 0.9044 14 A0.904
S~7 ce 58G17 s ce 62Dz4 s ce 63Bi04 s c i n 63Jo03 s ~ c e 64Ha06 (79"/16000t)
~21 2"0*b
K/L=3.8 K/L =4.5
s ce 62Dz4 s ce 63Bi04 63Jo03 K/LI = 5.0 s~7 ce 64Ha06 a K=0.0098 (8.6"/880t)
K/L I = 7.4 7.3
K/L = 4.7 4.7
T22 83* 77"16000t
E2 Theory i f ~2=30
77" A79'
K/L=5.90 K/L=5.14
a K =0.0049
a K = 0.0045
~14 2.2* 1.9" 2.4* A2.2,
x•150.8*
0.771 2 0.770 0.770 6 0.7705 11 A0.771
s ce 62Dz4 s ce 63Bi04 s c i n 63Jo03 srr ce 64Ha06
0.7831 12
ST~ ce 64Ha06
Tl6 0.7927 8 I00" 0.793 2 I00"15500# 0.793 12800t c 0.793 5 I00" 0.7934 12 A14150# ^0.793
T23 4.8* 0.4*
STZ ce 58017 K/L ffi 6.0 s ce 62Dz4 K/L =4.9 K/M =18.5 s ce 63Bi04 scin 63Jo03 K/L = 5.3 s-u ce 64Ha06 a K=0.0071 (I00"/14150t)
~:~
s ce
0.8204 12
sTz ce 64Ha06
xT10
0.8357 12
sn ce 64Ha06
T2o 36* 37* 7400t
0.8952 9 0.895 3 0.895 0.894
33* ^35*
K/L = 5 . 5 K/L = 5.00
6
0.8960 13 A0.895
K/L=5.33 a K =0,0047
a K =0.0046
~
scin 63Jo03
187t
s ce 62DZ4
0.97 3 1.0033
29 0.5" 1.0111 15 w* 1.0188 15 31 0.9" 1.0238 15
0.83*
1.018 3
0.075*
1.106 3
0.084*
1.361 3
30
w* 1.0286 15 0.4* 1.0545 16 w* 1.1295 1 7 ] 0.4* 1.1800 1 8 7 w* 1.1873 I8
J
280t 1.03 2
210t
1.16 3
38
T3i i s a l s o seen by 63Bi04 with E y = 1 . 0 2 4 .
s~7 ce 58G17 s ce 62Dz4 s ce 63Bi04 s c i n 63Jo03 s ~ c e 64Ha06 (35"/7400t)
K/L = 5.4
scin 63Jo03
0.42"
62Dz4
x~/18 0.3*
s c i n 63Bi04
-
0,3"0"4" 1.00811.002715,5
i35 0.805 3
--
23400t
x~/25 0.3* 0.99500.9803 t5 1 .X~26 0.8* 15 J
scin 635003
X~17 6.7*
s ce 62Dz4 scin 63Jo03 sw ce 64Ha06
23400t
sw ce 64Ha06
i! --
0.919 2 0.909 7 0.9216 15 A0.922
E2 Theory
~20 to 23
a K = 0.00595 K/L =5.1 E2 Theory 0.0142 6.2 M1 Theory 0.0060 5.2 if ~ = 15 w w fromTT(8), see 184Re-3
T14§247 15450}
K/L = 5.4
Unassigned T ' s
s ce
s ce
s ce
620z4
63Bi04
630z04
0.285 T~ >38 d f 0.788 L 0.899
E2 Theory
I =0.8*(K)
Ece= 0.071 Ece~ 0.073
Ece = Eoe = Ece = Ece =
0.0780 15 0.0870 15 0.091 2 0.945 I0
~Relatlve photon intensity normalized to 23400~
for T20 to 23 c e K - i n t e n s i t y normalized to 100" for Tl6 to give aK(0.2528T)= 0.088 ( t h e o r e t i c a l value for E2) 100t corresponds to 0.25 photons per 100 decays ~
bLine not f u l l y resolved CCalculated by compilers from T14+15§ photon intensity of 63Jo03 and T14 + TI5 photon intensities (from ce K intensities assuming E2 multipolarities)
AAdopted value XNot shown on level scheme
BI-I-75
t84Re 75
-5
109 Ground-State Decay continued
TT
6 r o u n d - S t a t e Decay continued
(0.1112y)(0.2528, 0.7937. 0.900 peak) 58617 (0.11127)(0.7937. 0.900 peak) 60Bo7 (ce L 0.11127)(0.6424. 0.7937. 63Bi04 0.900 peak, 1.024 peak) (ce L 0.11127)(ceK.ce L 0.2528y. 63Dz05 ce K 0.38427. ce K 0.6424y. eeK.ce L 0.7937. ceK.ce L 0.695§ Ece =0.945) (0.2528)/)(0.540, 0.6424, 0.790 peak, 0.900 peak) (0.2528"/) (0.2528. a 0.540. O. 64247: 0.790 peak, 0.900 peak) (ce K 0.2528y)(0.540, O. 64247, 0.790 peak. 0.900 peak)
(T) (0. I112~)
(y) ( 0 . 9 0 4 ~ ) ] (y) (0.7937) J
63Bi04
(0.790 peak)(0.216. 0.2528. 0.3187) (0.790 peak)(0.1112. 0.2528. 0.3187) (0.790 peak)(O, l l l 2 . 0.2528. 0.318y)
58617 60Bo7 63Bi04
A2 (0.7937)(0.11127)
J=O,
TT(0. H)
N N N N N
'q ~'r162
60Bo7
g ( i f TV, = 1.26 ns)
Assignment
184W(12 MeV-d.2n) chem 185Re(n.2n) chem p 0. II12~ knozn to be in 184~ from Coulomb e x c i t a t i o n
e'>r e_e, ~'r
- 0 . 1 7 7 13 - 0 . 0 4 3 24
(0.7937) (0.11127) ((J, H) ~ 0.31c5 60Bo7 t 0 . 2 7 9 17 64Ko13 See a l s o 184W-1
633003
~b" r162
Theory
C o n s i s t e n t with the s p i n sequence Theory J(D.Q)2(Q)0 f o r J = 1 and $ = 40.065 o r J = 3 and $ =-29 o r t0.13. Not c o n s i s t e n t with J = 0 . 2, o r 4
Y Y Y Y Y Y
7T
r
A4
- 0 . 0 3 6 5 +0.219 6 60Bo7 - 0 . 0 2 7 3 +0.307 15 64Ko13 A-0.027 3A+O. 307 15
I. 3. o r 4
(0.8957)(0.11127)
62Bl12
7T
~" r
58617 58617
Consistent with the spin sequence 2(D,Q)2(Q)0 for $ = 15. Not consistent with J(D.Q)2(Q)0 for
(0.900 peak)(0.230. 0.2528, 0.3187) 58017 (0.900 peak)(0.1112. 0.216. 0.2528. 63Bi04 0.3187) (ce x 0.900 p e a k ) ( c e L 0.11127. Ece = 63Dz05 0.0780, 0.0870. 0.091)
0. 1112 0.216 0.2528 0.318 0.384 peak 0.540 0. 6424 0.793 0, 904 1.03 peak 1.16 peak
58617 60Bo7 See 184W-1
8
< 1 . 1 ns
~(0)
63Bi04
63Dz05
,,o
1.3ns 1.28 AI. 26
58617
(ceK 0.3842y) (ceK,ce L 0.25287)
0.1112 ! Y Y 0.2528] Y Y 0 540 Y Y 0. 6424 ] Y Y 0.790 peak Y Y Y N 0.900 peak Y Y N
T~
TT-delay
~" r
r
%" %" %"
YYYy YYYYYY YY YN 'Y Y Y Y YYY YN YYYYYYY y N P P P P P Y Ya Y Y YN YYYYP PP YN YYYPP
63Bi04 63Jo03
N
YN yyyap YNPYYYP YNPYYYP YN Y YN Y Coincidence observed N No coincidence P P o s s i b l e coincidence
Methods of Production
Assignment o f W's
Ref
(184)W(14-MeV d.2n) Studied T~ (T) 62Dz4, 63Dz04 184W(12- and 25-MeYd. 2n) 38-d a c t i v i t y assumed 63Bi04 185Re(pile n.2n) Studied T~i (T) 633003 Found 5% of decays were from 165-d a c t i v i t y W(10- and 20-MeV p . n ) 165-d not from 10-MeV 64Ha06
aNot c o n s i s t e n t with t h e p r o p o s e d l e v e l scheme b s e e n o n l y in t h e d e c a y o f 165-d 184Re CValue o f 0 . 3 8 5 g i v e n by 608o7 has been c o r r e c t e d 64Ko13 f o r a t t e n u a t i o n e f f e c t s hhdopted v a l u e
BI-1-76
by
m4Re -4 75 109 165-d0 0. 188-MeV M e t a s t a b l e - S t a t c Decay
r~
169 d 8 160 166 1~ ^165 d
165-d, O. 188-MeV M e t a s t a b l e - S t a t e Decay
T(I84Re)
63Jo03 64Ha06 65B108
79 XTl0 xTll ,XT12 T!3 ~14 T15 716 T17 T18 T19 720 721 722 723 X~24 XT25 726 x~27 X728 729
T(184Re) TI
400*(L) 400*(L)
(I L
5800
O.084 L/M = 2.0 0.08335 12 L:M:N=40:14:4 A0.0834
K
hI
h2
L3
M1
bl3
M5
w
30
I0
I00
28
I00
5
0.7
28
6
100
-
-
-
s ce 63Dz04 En ce 641Ia06
s~ ce 64Ha06 M4 Theory
Conversion in Re established 63Dz04. 64Ha06 0.105 A0.1047 2
72 2S0" ctK
3.3
64Dz07 s7r ce 64Ha06
K
L1
h2
L3
M
N
100 I00
20 c ~2
4.9 6.5
-
14
100 100 100
15 11 15
1.5 121 4.1
0.16 108 2.5
w -
s ce 64Dz07 svr ce 64Ha06
S ce 63Dz04
15"
0.2166 3
17"
0.2528 ~
w*
0.3842 0.3867 0.538 0.6425
6 6 8 9
w* w* w* w*
0.7934 0.8960 0.9044 0.9216
12
W* w*
13
I6 1~
3,7"L 1.2" 6.4* 0.19" 0.25* 0.66* 0.14" 0.12' 0.063* 1.6" 0.83* 1.4" 0.14' 0.011" 0.021" 0.010" 0.039*
0.218 0.241 0.253 0.344 0.370 0.382
64Iia06 64Dz07
200* L 214" h
snce x0.0331 x0.0468 0.0553 0.0637 x0.0983
1 1 I I
TT
(ce L 0 . 0 8 3 4 7 ) ( c e K 0.1047)/)
s ce 64Dz07 s ce 64Dz07
s ce 65Dz01 (cetl N 0.0553+ce L 0.0637y)(ce~N 0.0553+ ce L 0.06377, ce L 0.1112T, ceM~ 0.1112y, ce K 0.1612y, ce L 0.16127)
L1/M=4 L2:L3:M~40:35:20
2
0. 111 s ce 63Dz04 0.1112 2 K:L2:L3:M:N= s~ ce 64Ha06 > 80:110:94:55:15 A0.1112 E2 See 184Re. g . s . - d e c a y
w* h I 0.1520 2
s~ ce 64Ha06
T8
0.163 0. 1612 2 A0.1612
scin 63Jo03 STT ce 64Ha06
(C%N 0.1047+ce L 0 . 1 1 1 2 y ) ( c e L 0.06377, ceMN 0.06377, ce L 0.0834y, C%N 0.08347, ce K 0.2528y. ce L 0.25287) (ce L 0,1047§
K/L 1 > 4
s ce 64Dz07
64Ha06
77
32*
3.3
0.540 0.643 0.771 0.793 0.896 0.904 0.922 1.011 1.024 1.106 I. 116 1.170 1.265 1.373
No(ce 0 . 0 8 3 4 7 ) ( ce 0.0553, 0. 1112"/) No(ce 0 . 1 1 1 2 T ) ( c e 0.16127) L1 L1 L1 L2 w* L 1
ffi
"Relative ceK-intenslty (except where noted) I00' corresponds to 12 eeK's per 100 decays
7(Is4w) T l to T 5 w* 14" 60* 40*
K/L
Ml Theory E2 Theory $2=0.01
Conversion in Re established TIT2 coincidences established
T6
continued swce 64Ha06
continued
CLine Is n o t completely r e s o l v e d AAdopted v a l u e XNot shown on level scheme B1-1-77
K 0 . 1 6 1 2 ) ' ) ( c e L 0~05537, ceMN 0.05537, ce L 0.08347, C%N 0.08347)
t84Re -:5
5
165-d, 0.188-MeV M e t a s t a b l e - S t a t e Decay
TT-delay (ce L 0.0834T)(ce L 0.1047Y)
continued
T~ ~2 ns
65Dz01
(ce 0.0553, 0.1612, 0.2166T)(ce 0.11127) 25 p s 65Dz01
For o t h e r TT, T T - d e l a y and f o r ~ ( 0 ) , see 184Re, Ground-State Decay
WW(0,H) r e s u l t s ,
Assignment 185Re(n,2n) chem 184W(2O-MeV p , n ) Not 184W(IO-MeV p,n) p 38-d 184Re from conversion in Re of 0.0834 and 0.1047 ~'s
63Jo03 64HaO6 64Ha06 64Ha06
See also Assignment la4Re-3
Added in Proof
T(184W) a
65Jo08
13t x0.1042 5 36t 0.1109 8 . 4 t 0.1604 6 15.4t 0.2155 6 1 . 9 t x0.2260 9 20.4t 0.2525 5 7 . 6 t 0.3179 6 4 . 3 t 0.3847 8 5.2T
5.9t 1.5t 87.9t
45.1t 100t 12.2t 0.317 1.5t 0.76t 0.088t 1.62t
0.5376 12 0.6413 15
0.7699 0.7922 0.8949 0.9032 0.9213 1.0102 1.0228 1.1104 X1.1213 1.1740
8 5 7 5 5 15
13 II
20 6
xi.220 0.22 0.22
TT
broad peak
1.2746 12 1.384 2
No (0.21b')') (7)
653008
~Relative photon intensity asource
was
a 150-d
old mixture of 38-d and 165-d 184Re
made by 185Re(n.2n) chem XNot shown on level scheme B1-I-78
184.-,
z6u%8-' Ground S t a t e
M a s s - S p e c t r o m e t e r Data
Abundance 0.018% ~nA < 200
59Full 65Sigm
Mass-Doublet Measurements
No a - a c t i v i t y
T~i > 1017y
for 1.5~E~3.7
Ppl
56P16
Reaction Data
Reactions
184W(a,4r~,)
E= = 52
scin 65La02
Ep = 14
sd ce 65Sali
(0.11981 (0.2640) (0.392) 0.500 Io 0 . 6 0 2 15
185Re(p, 2nT)
0.122 0.265 0.392 0.504 0.802 0.924
1
1 2
60Bh2 See 65Mass
K/L = 2.3 2 K/L = 2.8 8
4 7 7
BI-I-q9.
184 77
Ir
107
-I Ground-State
Decay
Ground-State
60Ba43 61Di4
3.1h3
3.2 2 ^3.2 h
TT
Decay
continued
0.1198, 0.2640 and 0.3912T's are in cascade
soin
61Di4
T(*a40s) T1
0.1200 5 0.1197 3
4.2"(L)
1o0t
0.125 5 0.120 I 0 ~0.1198
L/M=2.3 4 s c e 60Ba43 LI2:L3:M:N = s d ce 60Ba43 1.15 25:1:0.70:0.25 scin 61Di4 scin 630r08
LI2/L3= 1.3
Assignment and (l~5)Lu(12C,3n) chem Genetics No indication of 3-h I r parent in separated 0s fraction
a L = 1.3 E2 T h e o r y
T ' s seen are same as those known to be in 1840s from 184W(a,4n) and 185Re(p,2n) reactions T2
l.O* 203t
0.2640 t 0.267 5 0 . 2 6 0 10
K:L:M= 1.4 3:1:0.4
K/L-2.3
2
s c e 60Ba43 scin 61Di4 scin 630r08 S e e 1840s-I
^0.2640 K/L = 2.0
T 3 0.26" 871
0.3912 1 0.392 5 0 . 3 9 0 10
a K = 0.081
K/L = 4 . 3
K/L - 2 . 8 8
E2 Theory
s ce 60Ba43 scin 61Di4 scin 630r08 See 1840s-1
^0.3912 K/L - 3 . 1
T4 tot 7 5 7 t Xo.511
a K " O . 031
E2 T h e o r y
scin
61Di4
possibly T•
~x0.835 =x0.960 =Xl.090 E~(max) ~ 4 . 3
*Relative ceK-intensity "(except ce L for T1) ~Relative photon intensity
B1-1-80
61Di4
184_ 78Pt!o6-1 20-m State Decay
r89
2.6-h State Decay
20 m 2 20 m 2 A20 m
63Gr08 65Si03
2.6 h 6
Assignment 4.48 2 4.47 2 A4.47
p of a 3-h Ir activity experiment
ic 630r08 ic 65Si03
T(IS4Ir) s e i n 63Gr08
x0.155 10 J~ T ~ = 2 0 m 5 x0.190 I 0
Assignment 174yb(160.6n) excitation function
65Si03
42-m S t a t e Decay
r~
T(184ir)
42 m 3
65QaOl
s c i n 65Qa01
x0"68) Xl.72 T89 m Xl.85
T(IS40s)
s c i n 65Qa01
0.125
x1.18 Xl.40
Assignment
1
T89 3 h
may be 186pt
p 3 . 2 - h 184Ir from m i l k i n g e x p e r i m e n t and from agreement o f 0.125 and 1.18 T ' s w i t h 0.1198 and = l . 0 9 0 T ' s known in 184Ir decay 65QaOl AAdopted v a l u e XNot shown on l e v e l scheme
Bl-l-81
60~Ia28
from m i l k i n g 60Ma28
=
184
Ta, W, Re, Os, Ir, Pt
Compiled by M. J. Martin, December 1965 Replacement for pages 6 0 - 1 - 1 4 2 through 6 0 - 1 - 1 5 0 and 6-:2,3-289 and 6 - 2 , 3 - 2 9 0 of Nuclear Data Sheets
Level schemes, compilers' analysis sheets, and data sheets follow immediately. References, explanations of conventions, symbols, and abbreviations are at the back of this issue. P o l i c i e s and bases for spin-parity assignments are described in the front of the first issue of each volume. Explanation of report identifications (BNL, ISC, etc.) and a list of USAEC Depository Libraries in countries outside the USA through which reports may be obtained are given with the reference section of the first issue of each volume. References to reports are not used if a journal reference is available. P l e a s e refer to a specific Nuclear Data Sheet by using the number at the bottom of the page in the following way: Nuclear Data B1-1-69 (1956).
BI-I-63
A =184
Drawing I ~70 9.~176 ....... 183Hf + p +o~
7.702
~,6 ~ ~~176176176176176176176 1831"0§ n
t-
0
O-
47.8
"'"t~'x;22
:o;,:;.... ....
ffi30s+ n ~
4t
4o~o
~q+"
9;: .......... .&~#
+ .+ + + + ~ + +.++oo.~ ~ N
J~...,?:~s .............
..7.4~ .........
.................... ~6..
tB3W+ n
t83Re + P ~5.0
9q
...... row:. ;.
78
t06
184 7711"107
~'hT
4X
(~0+)~r~)rb'
el.88
(
See Drawing 2 1
T
(5")
87h
4.5
m2.48
//',.\
,.,,o ~o,.,., . / 1.170 80Z, 6.7
(6+)
- ' ~ rZo.r.t,~o
(4+)
t -o~'(~ zo38~g)
m2.12
.,.\\ tl Ez+0.46
~.;,~
.~u-~
~I~
mo~u
2.
"
lWa~d'
0§
J m4_ / / "::Re.__
/ ,____~
~"
v I
0
Stablei~Osi~
9-*o I
__.gz. / ~
. . . . . J- 1.287 -- 12OT.J-l~"~
,,+
(2)
(446;rN-
,o+.+.+,
TM(HO
C 3" 2* K=2
10.73,7N,7..6 )
bklm ~x~m0.9042I~<1.9ps
x-rib (6+)
O!r462
4+
bhko.3r=40
2+
bhk|m01112
t.26ns
~
9+ t84.
Stable
74W|10 B1-1-64
FI~2 Coulomb excitation with I l~ht ions (A~4) h heavy ions (A>4) b (d,p) k (n,n') rn (n,y) r (=,4n) z (p,2n) B,C,D,E,F Comments X T,s omitted
!
-t.
Drowing 2 A=184 B,F
"-r i
(5-) 184_ 731011 t
Comments
Tronsitions per tOO decoys of m ~-d telRe 8.7-h is4 To / t65-d tel Re i ),,s ploced twice
t18.7 h /
0r (8")00~ O'~eO 165d
,
I.lt0/20S, Z3,' ~ t.170/80S,67! /
~
t t t
/
~'
j.~..
m
t4
(0,1,2)
t3
14")
/
/
e" o" c~,o47
,, /
,,,:
te4R e
o
t5
~,~ T
. _
'1;~.
,.., II
1.222 1.207
~-F-r ::5"
1.2 IO,I,2)
II
J,J~"
(2) .~19tB
/(4-~,
,4;~
II t
1.6
7
~.+o,,,
.-,.1 - -
/
I,t6
(4"}
,20S,80) t.t0
I.I ##
, 77~,7.6 )
o,__zo , //
(0,t,2}
',.~
t.0
:).9
0.8
:
2"
:
)"- rib
l
/
I
(6+) '
0.7
I IIII" ~"
0.6
.
.
.
.
.
< 1.gps
0.7482
g
0.5 0.4
.
44
0.3640
-!~ /d
Q3 Q2 2+ 0.1 -
0
0§ K:O
t"2
; StoNe
t84W 74
||0
BI-I-65
o
.JL
/
~=|84
Compilers' Analysis, Sheet 1
Comments
Comments
C. Level Bands i n 184W
B. 184Ta Decay
continued
of, i m p u r i t y bands and f ( J i J f K ) i s a c o r r e c t i o n f a c t o r which a l l o w s f o r such i m p u r i t i e s i n the bands Ki and Kf. The f a c t o r f, f o r E2 t r a n s i t i o n s i s g i v e n e x p l i c i t l y by 63Di09.
The t r a n s i t i o n i n t e n s i t i e s b a r e been chosen so t h a t I ( 0 . 1 1 1 2 / + 0 . 9 0 4 7 ) =100 p e r 100 184Ta d e c a y s . J u s t a t p r e s s time, new p r e l i m i n a r y r e s u l t s were r e p o r t e d t o us by Johnson and Arcs (65Jo08). T h e i r r e s u l t s were v e r y h e l p f u l i n c o n s t r u c t i n g t h e r e a s o n a b l y c o n s i s t e n t decay scheme shown i n Drawing 2. T h e i r c h i e f f e a t u r e s a r e t h e ~ - c o i n c i dences w i t h t h e 0.460 and 0.413 W's and t h e l a c k of c o i n c i d e n c e s of t h e s e W's w i t h any of t h o s e p l a c e d n e a r t h e Is4W ground s t a t e by Coulomb exc i t a t i o n and 184Re decay. This e s t a b l i s h e d t h e e x i s t e n c e o f a d e l a y > l # s q u i t e h i g h up i n t he l e v e l scheme which was assumed t o be t h e same a s t h a t n o t i c e d by 64Dz07 i n Re decay, h l a c k o f i n t e n s i t y b a l a n c e between t h e W's p r e c e d i n g and f o l l o w i n g t h e d e l a y and t h e f a i l u r e t o o b s e r v e c o i n c i d e n c e s between the 0 . 9 2 2 / and any o t h e r W, e x c e p t t h o s e p l a c e d n e a r ground s t a t e , l e d t o t h e assumption t h a t the delayed s t a t e i s depopulated by a l o w - e n e r g y W not y e t o b s e r v e d or by a O. l l l y and 0 . 0 4 7 ~ i n p a r a l l e l , t h e f i r s t f e e d i n g t h e 1.222 l e v e l and the second t h e 1.287 l e v e l . S i n c e no f u r t h e r e x p e r i m e n t a l e v i d e n c e on t h i s p o i n t i s a v a i l a b l e , a l e v e l w i t h e n e r g y Ex ha s been drawn j u s t above the 1.287 l e v e l . The c o m p i l e r s a r e much i n d e b t e d to Drs. Johnson and h r a s f o r communicating t h e i r r e s u l t s and f o r h e l p f u l d i s c u s s i o n s w i t h r e g a r d to the decay scheme. See Erratum, page B1-I-68.
j"
E(level) Exp.
C o n s t a n t s Used
Calc.
R o t a t i o n a l band b u i l t on t h e ground s t a t e O* 2+ 4* 6+ 8+
0 0,1112 I 0.3640 I 0.7482 5 not s e e n
(0) (0.1112) (0.3640) 0.7481 1.238
A = 0.01867 B = - 2 0 . 5 x i 0 -6 Eo = 0
K =2 y - b a n d b u i l t on t h e ground s t a t e 2§ 3§ 4* 5*
0.9042 5 1.0065 5 1.1350 5 not seen
*Value
(0.90425 (1.0065) 1.1332 1.275
taken from
A* = 0.01867 B =-89.0x10 ~ Eo = 0.7954
ground*state band
B ra nc hi ng of y - b a n d t o g r o u n d - s t a t e band Calc.
Exp. Z=0 B(E2: 2 2 ~ 0 0 )
Z=0.040
0.59
0.70
0.56
0.18
0.05
0.08
1.6
2.5
1.5
O. 17
O. 34
O. 19
B(E2: 2 2 4 2 0 ) B(E2:224405 B(E2:22~20
C. Level Bands in 184W B(E2:324205 B(E2: 3 2 ~ 4 0 )
Comparisons are shown below of experimental level energies with those calculated by compilers from
B(E2:42~205 E(level) = E0§247 ( )'s
2
B(E2:424405
i n d i c a t e v a l u e s used t o d e t e r m i n e c o n s t a n t s D. Decay o f 38-d and 165-d 184Re
Comparisons a r e a l s o shown of e x p e r i m e n t a l reduced b r a n c h i n g r a t i o s d e f i n e d by
B(L:Jt-J )
rE (J'-JfS]
B(L:Ji-Jf) |l~(JCJfSl |%(JCJ~il with the theoretical values.defined by
-B(L. - JiK i4JfKf5 , B(L:JiKi4JfKf)
=
(JiLKIKf_KIlJ;K,5~ (JILKIKf-Ki[JfKf) 2
[/+Zf(JiJ~Z)] x [l§
where t h e p a r a m e t e r Z i s a measure of t h e a d m i x t u r e
The c a l c u l a t i o n of t h e b r a n c h i n g r a t i o s o f t h e i s o m e r i c t r a n s i t i o n was based on t h e a s s u m p t i o n s t h a t t h e 0.1112 and 0 . 9 0 4 y ' s i n 184W a r e t h e o n l y g r o u n d - s t a t e t r a n s i t i o n s fed i n t h i s decay. t h a t s e c u l a r e q u i l i b r i u m has been e s t a b l i s h e d and t h a t t h e 38-d a c t i v i t y o r i g i n a l l y produced has decayed. The h i n d r a n c e f a c t o r f o r t he 0.0834 M4 T, ba s ed on t h e ~ e i s s k o p f e s t i m a t e , i s 90. The t r a n s i t i o n i s once K - f o r b i d d e n (A K -L ~15 and s i n c e each u n i t of K - f o r b l d d e n n e s s c o n t r i b u t e s a r e t a r d a t i o n o f a bout 102 ( s e e 178'18~ t h e above h i n d r a n c e f a c t o r can be a c c o u n t e d f o r . M. J.
B1-1-66
Martin
C o m p i l e r s ' A n a l y s i s , S he e t 2
Comments
D. Decay o f 38-d and 165-d 184Re
Spin A s s i gnme nt s
(continued)
The i n t e n s i t i e s f o r lS4Re 38-d and 165-d a c t i v i t i e s have each been chosen so t h a t I(0.1112y+0.904)') = I00 per 100 d e c a y s o f t b e r e s p e c t i v e p a r e n t s . For th e 38-d decay, t h e i n t e n s i t y b a l a n c e f o r t he 0.9042 and 1.0065 l e v e l s r e q u i r e s 77% and 207~ ~-branching r e s p e c t i v e l y to these l e v e l s . This l e a v e s 3% of t h e Re d e c a y s f o r h i g h e r l e v e l s which i s t o be compared w i t h =5% r e q u i r e d by t h e l e v e l scheme. For th e 165-d decay, a r e a s o n a b l e i n t e n s i t y b a l a n c e f o r the Ex+0.216 l e v e l can be o b t a i n e d by assumi n g the m u l t i p o l a r i t i e s o f t h e 0.216, 0.161 and O . 0 5 5 T ' s shown on t h e l e v e l scheme.
184Tground s t a t e ~3-~111 The 73rd p r o t o n i s 7/2[404] ( s e e J~ = ( 5 - ) 181'183Ta) and the l l l t h n e u t r o n i s 3/21512] (185W) o r 1/21510] (18~0s). The Gallagher-Moszkowski coupling rules predict J~=5- or J~ = 3" The a bs e nc e o f f l ' s t o t h e g . s . band or T-band f a v o r s 5-
184w 0.1112 l e v e l 74-110 j~ = 2+
0.3640 l e v e l j~ = 4+
E. 1840s Level Scheme 1840s l i e s i n t h e t r a n s i t i o n r e g i o n between deformed and s p h e r i c a l n u c l e i , a r e g i o n where t h e Bohr-Mottelson theory i s not expected to y i e l d
j " = (6 +)
0.9o42 level j~ ~ 2+
Parameters used: E(2 +) =0.1198 E(2 +*) =0.923 E(O +') = 1.500 (assumed)
0+ 2+ 4+ 6+ 8+ 10 +
E(level) Exp.
Calc.
0 0.1198 0.3838 0.7750 1.279 1.88
0 0.120 0.384 0.770 1.260 1.S4
Coulomb e x c i t a t i o n
(160,160"T) e x c i t a t i o n f u n c t i o n
0.7482 Ievel
good agreement with experiment. A comparison is sho~n below of experimental level energies with those calculated by compilers using the rotationvibration interaction theory of Faessler and 6reiner (65Fa05).
J~
A - ~84
1.0065 l e v e l j ~ =3 +
1.010 l e v e l J = (0.1.2)
F. 184Re-184W Decay Energy
P o s s i b l e member of g r o u n d - s t a t e r o t a t i o n a l band from e n e r g y f i t and i n e r t i a l p a r a m e t e r s
The 0.793u i s E2§ from a K and K/L.~ J n = l * , 2 + o r 3 + (0.793$)(0.1112)Q(0) i s c o n s i s t e n t w i t h J = 2 , not w i t h J ~ l o r 3
The 0.6424)' i s E2+MI from a K and K/L A J~ =3 +, 4 +. 5 + (0.895T)(O. I l 1 2 y ) ( O ) i s c o n s i s t e n t with J = 3 , not with J = 4 , 5
Level i s fed from a J~ = 1" n e u t r o n r e s o n a n c e .'. J = 0 , I, or 2
From mass-spectroscopic measurements (65Mass), the mass difference between the stable nuclei IS40s and I84W is 1.62 7. If Q+~1840s) --ww0, then Q+(IS4Re) =1.62.
Mass D i f f e r e n c e s The mass d i f f e r e n c e s s h o ~ on t h e l e v e l scheme a r e t a k e n from a l e a s t - s q u a r e s a d j u s t m e n t o f masss p e c t r o m e t e r , r e a c t i o n , and decay d a t a i n t h i s mass r e g i o n . See A d j u s t e d Mass D i f f e r e n c e s , immediately preceding references in this issue, f o r a l i s t o f d a t a used i n t h e a d j u s t m e n t . M. J. Martin
BI-I-67
|
A=18~
Compilers' Analysis, Sheet 3
Spin Assignments
Spin Assignments
184w I 1350 l e v e l 74-110 "" j " ~ (4 +)
1.16 1.39 2.12 2.48
level t level level level
1.222 l e v e l J~ = (2-)
1.287 level j~ = (4 +)
Level decays to 2~. 4§ and 6 + levels Member of T - v i b r a t i o n a l band b u i l t on the 0.9040 level from energy f i t and i n e r t i a l parameters. See Comment C
184n~ 0.1198 level 76vn108 Levels are seen in (a.4rry) r e a c t i o n . j~ = (2 +) This r e a c t i o n i s known to p r e f e r e n t i a l l y e x c i t e l e v e l s in the g r o u n d - s t a t e r o t a t i o n a l band (see 16~ See Comment E f o r comparison o f experimental l e v e l s with those p r e d i c t e d by the 1.88 level rotation-vibration interaction j " = (10 § t h e o r y of 65Fa05
Levels are fed from a J~ = 1n e u t r o n resonance .'. J = 0, 1 o r 2 0,923 level jn = (2 +)
Level feeds 2 § and 3 + but not 0 + or 4 + l e v e l s
Level feeds 2 §
Excited by (p,2nT) r e a c t i o n which a l s o e x c i t e s members of grounds t a t e r o t a t i o n a l band P o s s i b l e band head o f a T - v i b r a t i o n a l band from s y s t e m a t i c s
4 + and 6 + l e v e l s Erratum On Drawing 2, the 1.426 and 1 . 1 7 3 y ' s a r e shown dee x c i t i n g the Ex+ 0.210 l e v e l and f e e d i n g t h e 0.3640 and 0.7482 l e v e l s . These T ' s should o r i g i n a t e a t the 1.537 l e v e l and feed the 0.1112 and 0.3640 l e v e l s .
184~ ground s t a t e ~5-v109 The 75th p r o t o n i s 5/21402]~ (see J~ ~ (3-) 18s'187Re) and the 109th n e u t r o n i s 1/21510]r (see 183Wand laSos) 9~ J " =3- or 2-. The G a l l a g h e r Moszkowski c o u p l i n g r u l e s p r e d i c t J~ = 3" 0.1047 l e v e l
J~ = (4-)
0.1880 l e v e l J= = (8+)
K t o L s u b s h e l l r a t i o s show t h a t the 0.1047)' i s E2~MI P o s s i b l e member of a r o t a t i o n a l band b u i l t on the ground s t a t e
L s u b s h e l l r a t i o s show t h a t the 0.0834y i s M4
M. J. ~lartin
B1-1-68
~84 73Ta,IH -1 G r o u n d - S t a t e Decay
~i
Q'= 2 . 9 I
55B80
8.7 h ~ 8.5 5 ~8.7
= I. II
~2
= 1.17
5.8 w 1.453 1~
x~ 4
1.0 w 1.755 20
0.15w 2.644 28
continued
121 O. 160 scin 55B80 llJ O. 167 scin 60Va24 O. 160 scin 64Ve01 7.21 0.1613 9 double from T)" scmicond 650o08 A0.1612 See 184Re-4
1.51
75
12} 23t 18.0t
0.210 0.213 0.2152 10 A0.216 E1
s c i n 55B80 s c i n 60Va24 semicond 650008 See 184Re-1
0.126 3
xT6
8. D
0.2265 10
semicond 650008
T7
7.5|
0.242 2
semicond 65Jo08
scin ~ . ~T64Ve01
s c i n ~ , ~764Ve01 7 3 . 4 ~ 0.2530 7 ^0.2528 E2
76§ 8 70t 0.240 87t 0.250
s c i n fiT65Jo08
0.245
%
2.3t
0.296 2
semicond 650008
71o
32.3t
0.3182 8 ~0.318
semicond 650008 See 184Re-1
79+1o
Input to Mass Adjustment 65Mass Output from Mass Adjustment 65~lass
=2.9 I
711
41~ 0.300 411 O.314 0.305
16.7t
T(184W) 0.0888 12
351 0. II0 35t 0.113 0.111 29.2t 0.1108 8 AO.III2 E2
scin 55B80 scin 60Va24 scin 64Ve01 semieond 650008 See 184Re-1
tRelatlve photon intensity. 100t corresponds 79 photons per 100 decays
712
0.386 AO.3867
100t
711411"+12
to
llTt l17t
AAdopted value XNot shown on l e v e l
0.3846 13 AO.3842
scin 55B80 scin 60Va24 scin 64Ve01
semicond 650008
See 184Re-1
semicond 650008 711"
72
scin 55B80 scin 60Va24 scin 64Ve01
~-intenslty
Q" = Average of E(/JI) § +E x and E(~2) +E7(0.413) + E x where E x = 1.287 ~ E(isomeric 7) >2.9 =2.9 I by assumption. See Comment B
71
semicond 650008 See 184Re-1
scin fl, ~764VeO1
No ~ with E f l > l . 5 p r e l i m i n a r y r e s u l t
w
semicond 65Jo08
scin ~. ~y 64VeOl
78 x~5
continued
x~/4
From l e v e l scheme
93~ 1.190 I0
/33
73
scin ~ 7 6 5 J o 0 8
(8{~D
fl24~3
7(184g)
6OPol
scin ~ T 650008 From level scheme
(20~)
G r o u n d - S t a t e Decay
scheme
B1-1-69
0.4131 13
0.405 0.413 0.408
scin TT 650008 See 184Re-I
semicond 650008
s c i n 55B80 s c i n 60Va24 s e l n 64Ve01
1
184 75T0111-2 Ground-State Decay 3"(184~) 9"13
continued
0.463 0.4597 12
s c i n 60Va24 semicond 65Jo08
x9"23
1.04t
X~24
1.016 1.091 1-022a3
0.970a3
A0.460 9'14
231 0.528 0.529 18.41 0.5372 9 A0.540
51
scin 60Va24 scin 64Ve01 semicond 65Jo08 See la4Re-I
3"24"
0.638 0.656 1.141 0.642 3 A0.6424 E2§
scin 60Va24 scin 64Ve01 semicond 65Jo08 See 184Re-2
3,25
3"16
1.951 0.770 2 A0.771
semicond 65Jo08 See 184Re-2
X~26
9"17
19.9t
semicond 65Jo08 See 184Re-2
3"15
9"16+17 20t 23t
0.7929 8 A0.793 E2§
0.780 0.784 0.788
3.401
3,27
scin 55080 s c i n 60Va24 scin 64VeOi
89
1.041 0.810 3
semicond 65Jo08
x~/19
0.96i
0.872 ~
semicond 65Jo08
Xy29
3"20
7.6t 14.41
scin 60Va24 semicond 65Jo08 See 184Re-2
3'3o
9"22
3"21§
0.867 0.8958 ~0.895
I0
2 0 . 4 } 0.9042 9 A0.904 E2
semicond 65Jo08 See ]84Re-2
42.1t
semicond 65Jo08 See 184Re-2
0.9218 7 A0.922
0.890 7611 0.910 0.905
AAdopted v a l u e XNot shown on l e v e l
X/31 732
scin 60Va24 semicond 65Jo08
1.064 AI.060
scin 64Ve01 scin3,3"65Jo08
1.089
w 60Va24 scin 64VeOl scmicond 65Jo08
1.105 1.111a2
0.33i
1.154a5
semicond 65Jo08
s c i n 55B80 1.180 s c i n 60Va24 1.152 1.159 s c i n 64Ve01 6.0t 1.173 2 double from 3"T semicond 65Jo08 A1.173 1.215 1.212 0.53t 1.207a4 ^1.207
1.277 1.270
scin 60Va24 scin 64Ve01 semicond 65Jo08
scin 60Va24 scin 64Ve01
1.350 1.321 0.31t 1.315a4 AI.315
scin 60Va24 scin 64Ve01 semicond 65Jo08
0.14t
semicond 65Jo08
1.340a5
scin 60Va24 s c i n 64VeOl 0.38t 1.426 ~ double from WW semicond 65Jo08 AI.426 1.4407 1.440
s c i n 55B80 scin 60Va24 scin 64Ve01
1 R e l a t i v e p h o t o n intensity. 100T corresponds to 79 p h o t o n s p e r I00 d e c a y s
semicond 65Jo08
hall
xTI8
9"21
continued
3"(184W) continued
continued
201 15.61
Ground-State Decay
Other 7 ' s
0.947 1.5507
scin 64Ve01 scin 60Va24
aThc w i d t h of t h i s peak i s b r o a d e r than t h e e x p e c t e d Gausslan distribution
scheme
BI-1-70
t84.,.
75 I(]1tl
Ground-State Decay continued
Ground-State Decay continued
Sum peaks
TT scin
60Va24
scin
0.463 1.016 1.089 1.152
1.440 1.550
-3
scin-semicond 65Jo08
continued
64Ve01
(I.1737)(0.1112. 0.1612)', 0.2528T) 1.005 (1.313)')(0. II12, 0.1612)', 0.25287) (1.426T)(0.1112, 0.1612y)
1.212 1.312 1. 430
No (0.771~)(0.318y) No (0.8955)(0.2528. 0.318T)
(I.19Q~)(E T>0.08, 0.410. 0.900 peaks) (1.453fi)(E T>0.08. 1.173~) (l.755r~)(E T >0.08. 0.410, 0.900 peaks) (2.64{3)(E T > 0.08)
64VeOl 64Ve01 64re01 64Ve01
(= 1.170,.~)(0.413y) (= 1.110~)(0.460y)
653'008 65Jo08
TT-delay
(0.922y)(0.1612, 0.216)') No 184~ level with T,i>l s
~i>l ~s
65J008
Wchem 65Jo08
Assignment
la4W(fast 186W(d,a) p O. 1112y Coulomb
scin 65Jo08
VT
(0.1112y)(0.2528, 0.6424, 0.922, 1.011, l . l l l , 1.173, 1.315, 1.426y) (0.1612~)(0.296T) (0.216y)(0.242T) (0.2528~/)(0.318, 0.3842, 0.540, 0.6424,
0.771, 0.922, 1.060, 1.173, 1.315, 1.426~) (0.318y)(0.540, 0.793. 0.904~) (0.3842y)(0.2528, 0.3867. 0.540, 0.810)9 (0.540"/) (0.2528, 0. 318, 0.3842T) (0.6424y)(0.2265, 0.3185) (0.771~)(0.2528~)
(0.793y)(0.318y) (0.895T)(0.2265T) (0.9045) (0.318Y) (0.922y)(0.2528"/) (l. lllT)(0.1112~)
BI-I-71
n.p) chem chem known to be in Ia4W from excitation
55B8o 64Ve01
184
74Wllo -1 Ground S t a t e
Reaction Data
Abundance ~nA
30.64~ 2.1
59Full 65Sigm
Coulomb E x c i t a t i o n continued 184W(x.x'T) 0.1112 l e v e l continued s
T~ ~ 2x1017y 3x1017y
ET
B(E2)T
x
Ex
60Be13 610r37
a K =0.99 I0 1.26-ns,
j~ /i
0
Coulomb excitation
TT(0,H) 184Re-3 ~y(8, H) 184Re-3 P,T(~,H) 184W-1 p.T(0,H) 184W-I P,T(0,H) 184W-1 182W) = 1.06 15 Moss 64Ch24
Q/Q(0. 1001 l e v e l
162W) = 1.00 25
1.28 ns 8 1.3 4 1.24 ~ 1.28 2 1.14 8 ^ 1 . 2 6 ns
Moss
0.3640 l e v e l j~ =4 + T~ =54 ps
184W-I
0 . 6 2 I0 0.558 3~ 0,408 32 0.560 36 0.574 50 p/p(0. 1001 l e v e l
57M34
0.25 0.246 0.2523 2 (0.246) 0.254 2 A0.2528
62Phl
T T - d e l a y 184Re-3 T ~ - d e l a y 184Re-3 a T - d e l a y 184W-1 p,T(0,H,t) 164W-I Coulomb e x c i t a t i o n 184W-1
0.9042 l e v e l j~ = 2 + T~ = 1.9 ps
0.790 0.780 15 0.780 8 A0.793
Reaction Data
0.900 0.910 15 0.891 9 ^0.904
T 0.07
Coulomb excitation
i f T~=1.26 ns i f T~A= 1.26 ns
p,T(0,H) 620o17 p,T(0,H) 65Eb03 p,W(0,H,t) 65Sc05
ag'-delay 62Bi5 p , T ( 0 , H , t ) 65Sc05 i f B(E2)! =4.0 3 and a = 2.65
B(E2)! x
Ez
Method
2ONe 14N 160 1.6 3 16N 160
27.8 s c i n 60An8 50 semicond 62Afl 14-50 s ce 636r04 37 semicond 64A125 30-44 s c i n 64De07 See 184Re-1
See Spin Assignments i f B(E2)! =0.14, a(0.793~/) =0,0096 and photon c r o s s o v e r / c a s c a d e = 1.32
E7
T 0.06
Coulomb Excitation 164W(x,x'T) 0.1112 level jn ~ 2 +
Excitation function 64A125 i f B(E2)T = 1.6 and a =0.14
E~
EB(E2)T
ffi 1 . 2 4 ns 1.28 2 1.14 8 ^1.26 ns
scin x/y
O. III2-MeV Level
2+
g = 0 . 204 16 O. 280 18 0. 287 25
Method
0. 112 4 p 2,5 s c i n 5&~01 0.116 a 2.75 677 ce 55B25 0.1111 4.1 a p 1.75 sd ce L 56H49 ce L 1.7 O. 11113 6 p 3.7 c r y s t 57C39 4.456~5 p 4.0 s c i o 58M02 T 1.22 t2 0.112 0.112 3.62 20 p , d 4.5 s x" 61Ha21 O. l l l 14N 50 semicond 62Afl 4.30a30 160 14-50 s c i n 63Gr04 5/1.18 8 0.112 I 160 30-44 s c i n 64De07 0.111 ~ p 8 . 5 - 8 . 5 s p" 64Sp03 A0.1112 E2 See 184Re-I
Ground-State Decay
No a
continued
B(E2)!
x
Ex
Method
0.14 b
a 13.1 a 14-20 p 5.0
s c i n 58AI0! s c i n 60Na13 s c i n 61Mcl See lS4Re-I
0,190 55 a 13.1 0.12 b. a 14-20 0.17.5 p 5.0
s c i n 58A101 s c i n 80Na13 s c i n 61Mcl See 154Re-1
IT(0.904T)/IT(0.793y) = 1.32
alf
aL(0.1112T)
bIf
a(0.793T)
= 1 . 5 0 a n d a ( 0 . 1112T) ffi 2 . 6 5
= 0.0096.
a(0.9O4y)
c r o s s o v e r / c a s c a d e = 1.32 AAdopted v a l u e
BI-1-72
s c i n 58A101
=0,0056
and
photon
184 w 11o- 2 Reaction Data
continued
Reaction Data
Resonances
Other Reactions 183W(d~
184W(n,n')
W(n.n'T)
E = 0.3-1.5 tfl 63S~07
E = 3.0 scin 59A130
E(level)
E(level)
E,/
0.11O 0.364 x0,700w 0.890 0.990 Xl.100 Xl.210 Xl.420
0. I l l 5 0,365 10 X0.690w 0.900 30 1.000 30 X1.120 30
E = 15 631s01
s p
Xo.21 x0.38 X0.57 x0,76 x0.92 Xl. 20 Xl.54 x 1.87
3 3 3 3 3 4 4 5
(n,n # ) results See D. Lister, I I , No. I . 29,
do not show
A. B. Smith, BB8 (1966)
the 0.690 Bull.
a b
level.
Am. Phys.
Measured
Eo(eV)
Measured
i I
T.C T.C
650 2 680 2
T,C T,C
2
T.C
698 2
T.C
2 2 2
T,C T,C T,C
727 2 758 2 871 2
T.C T,C T,C
T Transmission
xi.750 w
continued IS3w(n)
Eo(eV)
419 430 461 540 552 607
c
continued
C Capture
S Scattering
O Gammas
Measurement o f r ~ and F n / r ( o r ~ / F ) Use of the i n e q u a l i t y g>GrOE0/2.60XI06 §
Observation of strong gamma to 0
ground state
Soc.
Capture ~ ' s Resonances
183W(n) (183)W(n,T) sn p r 53K45
Resonance parameters adopted by Brookhaven Sigma Center. August 1965. Complete data with r e f e r e n c e s w i l l be p u b l i s h e d by Sigma Center.
En= th
~o
Eo eY
6.4 4 25.5 15
7.65 3 27.13 5 1.2 3 40.60 6 29.3 15 46.08 7 8.0 15 47.8 I 0.45 10 66.0 5 8.0 15 1Ol,0 3 103.9 4 137.8 4 2.1 3 144.5 ~ 3.5 3 155.0 4 4.3 7 157.1 4 2.1 5 174.1 5 192.4 4 203.7 4 228.0 4 236.0 5 240.7 4 244.0 5 259.2 5 280.5 5 297.6 6 323.2 6 337.5 6 349 10
354" 2 361 1 378 I 392 I
F~
I~,
mV
~mV
0.65 4 8.1 4 0.27
6
22.7 9 16.6 14 0.23 2 9.5 10 0.3"I 0.38*4 7.9 15 32 4 4.6 6 30.0 1I 2.5 3
J
70 77 68 69 78 103 120
5 6
10
1 0
20 40
1 I
a,b,c a.b.c b,c a,b,c a,b b,c a, c
120 75 120 170
30 8 30 50
0 O
b b
1 1 1
b,c b b
30
8
I I 1
Method Measured
7 . 5 * 38
11" 2 0.8*3 1.3 3 3.7 6 12 2
2.3 3 5.0 10 1.2'7 11'2 2.8*8 5.7"12 1.5"8
1
c
1
c
I I
c c
I
c
T.C.S. T,C~ T,C, T,C,S, T,C,S T.C, T,C.S T,C T,C T.C T,C T,C T.C T,C T. c T~C T.C T,C T,C T,C T.C
T,C T,C T.C
6 6 6
soin 63Bo30
En(eV) 7.65
d 103 b
scin 58B140
0.6t 2.4t 0.3t
4.94 2 5.304 9 6.02? I
st st ?
0.3t
6.40 5
st
0 . 1 t x6.73 3
?
0.3?
st
En(eV) 7,65 27.13 e
15115 20195 1295 1195
G 7.42 2
f 6.03 6.26 6.40 6.51
3385 3215 6915 -565
86~ 1580~ 7.31 2775t 635 7.41
IPhotons per I00 n-captures in W SRelative values dThese T*s assigned
to 184W because
photons
wlth
approximately these energies were seen at the 7.65 eV resonance by 58B140. See 187W-9 (BI-2) for neutron separation eRelatlve
energies
intensities
and 66.0 eV also f^uthors
give
only
not 7-energles; values.
and all capture T's for resonances
in natural
at 40.60,
W.
46.08,
given.
probable
final
energies
here =7.41
Resolution
poor.
levels
Intensities
in T-transitions
- probable from
level
positions
of complex peaks. XNot shown on level scheme
T,C
Mass-Spectrometer Data
T. C T,C T,C T.C
Mass-Doublet Measurements
"2gr0n r a t h e r than I~0n
B1-1-73
57J08, 60Bh2, 61De21 See 65Mass
I
t84Re -1 75
109 Ground-State
TV3a
38 d 38.0 33 34 A38 d
~+?
weak
Decay
I 5 3 5
= 0.900 Probably
due to electron
scattering
62Dz4 63Dz04
scattering
62Dz4 63Dz04
T2
6650"(L) 5220*. 6380t >2990"
srr c e
0,1112 0,11120 6 0,111 0.111 t 0,111 L:M:N = 1 0 0 0 : 1 5 2 : 3 4 0. U l I 0.1112 2 La/M=I.76 0,11113 6fromCoulombexcit.
srr c e 56T22 sn ce 58617 sein 6013o7 s c e 62Dz4 s'ce 63Bi04 scin 63Jo03 s ~ c e 64Ha06 cryst 57C39
scinTT 58G17 s ce 63Bi04 scin 63Jo03 srr ce 64Ha06
sein TT s ce
58617 62Dz4
0.250 20
sein TT
58617
0 , 2 5 2 8 4 10 sTr ce 0,252 I s ce 0,253 L:M:N = 1 0 0 0 : 2 5 5 : 4 9 s c e 16407 0 , 2 5 3 sein 129' 0.2528 3 L:M=I00O:140 sTr c e 0.2523 2 184W-1 s ce A144, `0.-~-~
58617 62Dz4 63Bi04 63Jo03 64Ha06 636r04
~7
146" 158'
see 184Re-5 0,09733 5
continued
0 . 2 3 0 20 ^ 0 . 2 3 2 20
T6
T(Ia4W) See Assignment, 184Re-3 For additional d a t a , Added i n P r o o f ,
xT l
Decay
T(184W) c o n t i n u e d T5 0 . 2 1 0 20 6.6"(L) 0.220 10601 c 0 . 2 1 7 3 w* 0,2162 3 ^-~,216
60Bo7 62Dz4 63Jo03 65B106
= 1.5 May b e d u e t o e l e c t r o n
~-?
Ground-State
58G17
a
aK
K
L1
1000 1000
b
1OO0
122
L2
L3
2 9 8 ~ 290 b 105
0.36 6 0.14
0.088
216
see 63Bi04 srr e e 64Ha06 sein T/y63Jo03
132
E2 T h e o r y
'o.1112 3/9 a
aK
K
LI
vw 725
vw w
2 . 8 5 35
0.99 0.82
> 640 b > 730 b 10 (5220"/6380t)
L2 w I000 1700~
L3 w 640
srr c e 56T22 srrce 58G17 s ce 63Bi04 scin T/T63Jo03 1000 883 s r r c e 64Ha06 I000 855 See 184Re-4 f r o m Coulomb e x c i t . 57M34
0.70
930
103
X~3 1 5 0 '
O, 151 K - l i n e
xT4
0,186
4
10O0
only seen
880
0,3842
5
sTr ce 64Ha06
T I 1 w*
0,3867 5
srr c e 64Ha06
302?
0,384
5
soin 63Jo03
E2 T h e o r y TI 2 0.540 3,2* 0,5~0 3.4* 341t 0,540 395t 0.539 1.4" 0.5398 A2.7*a368t ^0.540
s ce 63Bi04 scin TT 633003
40 2 5
?Relative
8 a K=0.0073
photon
sein 58617 s ce 62Dz4 s ce 63Bi04 seln 63Jo03 s77 ce 64Ha06 (2.7"/368t)
K/L = 4 K/L = 4 . 2 double from~T
a K=0.0050 0.0133
aThe h i g h v a l u e o f T~ ( = 50d) o b t a i n e d by e a r l y w o r k e r s was p r o b a b l y due to a 183Re i m p u r i t y w i t h T~ = 7Od. See 58617 and 633003 bLlne not fully resolved Cblainly due t o 1 6 5 - d 184Re. T y - i n t e n s l t y d a t a of 6 3 J o 0 3 show t h a t I ( 1 6 5 - d ) / I ( 3 8 - d ) = 4.4 for their source AAdopted v a l u e XNot shown on l e v e l
s c i n T T 58617 scin TT 63Bi04 scin 63Jo03 s r r c e 64Ha06
~ I o w*
~1o§ 2.64
0 . 3 3 0 25 0.322 400t 0.318 3 w* 0,3184 5 ^0,318
intensity
K/L=6.6 4.3 normalized
E1 T h e o r y E2 T h e o r y to 23400t
f o r T20 t o 23 *Relative ceK-intensity (except where noted) n o r m a l i z e d t o 1O0* f o r TI6 t o g i v e aK(O.2578T)= 0.088 (theoretical v a l u e f o r E2) 100t c o r r e s p o n d s t o 0 . 2 5 p h o t o n s p e r 100 d e c a y s
scheme B1-1-74
184Re -P_. 75 109 Ground-State Decay continued
T(la4w) T13
continued 0.6424 6
8.3* 8.2*
0.642 2 990t 0.642 770t 0.641 7 9.4* 0.6425 10 A8.6" A880i A0.6424
a K ffi0.0093 0.0098
Ground-State Decay continued
T(184W)
s~ ce
58G17
continued 0.8992 14
sTz ce 64Ha06
0.9043 9 0.904 2 0.904 0.904 6 0.9044 14 A0.904
S~7 ce 58G17 s ce 62Dz4 s ce 63Bi04 s c i n 63Jo03 s ~ c e 64Ha06 (79"/16000t)
~21 2"0*b
K/L=3.8 K/L =4.5
s ce 62Dz4 s ce 63Bi04 63Jo03 K/LI = 5.0 s~7 ce 64Ha06 a K=0.0098 (8.6"/880t)
K/L I = 7.4 7.3
K/L = 4.7 4.7
T22 83* 77"16000t
E2 Theory i f ~2=30
77" A79'
K/L=5.90 K/L=5.14
a K =0.0049
a K = 0.0045
~14 2.2* 1.9" 2.4* A2.2,
x•150.8*
0.771 2 0.770 0.770 6 0.7705 11 A0.771
s ce 62Dz4 s ce 63Bi04 s c i n 63Jo03 srr ce 64Ha06
0.7831 12
ST~ ce 64Ha06
Tl6 0.7927 8 I00" 0.793 2 I00"15500# 0.793 12800t c 0.793 5 I00" 0.7934 12 A14150# ^0.793
T23 4.8* 0.4*
STZ ce 58017 K/L ffi 6.0 s ce 62Dz4 K/L =4.9 K/M =18.5 s ce 63Bi04 scin 63Jo03 K/L = 5.3 s-u ce 64Ha06 a K=0.0071 (I00"/14150t)
~:~
s ce
0.8204 12
sTz ce 64Ha06
xT10
0.8357 12
sn ce 64Ha06
T2o 36* 37* 7400t
0.8952 9 0.895 3 0.895 0.894
33* ^35*
K/L = 5 . 5 K/L = 5.00
6
0.8960 13 A0.895
K/L=5.33 a K =0,0047
a K =0.0046
~
scin 63Jo03
187t
s ce 62DZ4
0.97 3 1.0033
29 0.5" 1.0111 15 w* 1.0188 15 31 0.9" 1.0238 15
0.83*
1.018 3
0.075*
1.106 3
0.084*
1.361 3
30
w* 1.0286 15 0.4* 1.0545 16 w* 1.1295 1 7 ] 0.4* 1.1800 1 8 7 w* 1.1873 I8
J
280t 1.03 2
210t
1.16 3
38
T3i i s a l s o seen by 63Bi04 with E y = 1 . 0 2 4 .
s~7 ce 58G17 s ce 62Dz4 s ce 63Bi04 s c i n 63Jo03 s ~ c e 64Ha06 (35"/7400t)
K/L = 5.4
scin 63Jo03
0.42"
62Dz4
x~/18 0.3*
s c i n 63Bi04
-
0,3"0"4" 1.00811.002715,5
i35 0.805 3
--
23400t
x~/25 0.3* 0.99500.9803 t5 1 .X~26 0.8* 15 J
scin 635003
X~17 6.7*
s ce 62Dz4 scin 63Jo03 sw ce 64Ha06
23400t
sw ce 64Ha06
i! --
0.919 2 0.909 7 0.9216 15 A0.922
E2 Theory
~20 to 23
a K = 0.00595 K/L =5.1 E2 Theory 0.0142 6.2 M1 Theory 0.0060 5.2 if ~ = 15 w w fromTT(8), see 184Re-3
T14§247 15450}
K/L = 5.4
Unassigned T ' s
s ce
s ce
s ce
620z4
63Bi04
630z04
0.285 T~ >38 d f 0.788 L 0.899
E2 Theory
I =0.8*(K)
Ece= 0.071 Ece~ 0.073
Ece = Eoe = Ece = Ece =
0.0780 15 0.0870 15 0.091 2 0.945 I0
~Relatlve photon intensity normalized to 23400~
for T20 to 23 c e K - i n t e n s i t y normalized to 100" for Tl6 to give aK(0.2528T)= 0.088 ( t h e o r e t i c a l value for E2) 100t corresponds to 0.25 photons per 100 decays ~
bLine not f u l l y resolved CCalculated by compilers from T14+15§ photon intensity of 63Jo03 and T14 + TI5 photon intensities (from ce K intensities assuming E2 multipolarities)
AAdopted value XNot shown on level scheme
BI-I-75
t84Re 75
-5
109 Ground-State Decay continued
TT
6 r o u n d - S t a t e Decay continued
(0.1112y)(0.2528, 0.7937. 0.900 peak) 58617 (0.11127)(0.7937. 0.900 peak) 60Bo7 (ce L 0.11127)(0.6424. 0.7937. 63Bi04 0.900 peak, 1.024 peak) (ce L 0.11127)(ceK.ce L 0.2528y. 63Dz05 ce K 0.38427. ce K 0.6424y. eeK.ce L 0.7937. ceK.ce L 0.695§ Ece =0.945) (0.2528)/)(0.540, 0.6424, 0.790 peak, 0.900 peak) (0.2528"/) (0.2528. a 0.540. O. 64247: 0.790 peak, 0.900 peak) (ce K 0.2528y)(0.540, O. 64247, 0.790 peak. 0.900 peak)
(T) (0. I112~)
(y) ( 0 . 9 0 4 ~ ) ] (y) (0.7937) J
63Bi04
(0.790 peak)(0.216. 0.2528. 0.3187) (0.790 peak)(0.1112. 0.2528. 0.3187) (0.790 peak)(O, l l l 2 . 0.2528. 0.318y)
58617 60Bo7 63Bi04
A2 (0.7937)(0.11127)
J=O,
TT(0. H)
N N N N N
'q ~'r162
60Bo7
g ( i f TV, = 1.26 ns)
Assignment
184W(12 MeV-d.2n) chem 185Re(n.2n) chem p 0. II12~ knozn to be in 184~ from Coulomb e x c i t a t i o n
e'>r e_e, ~'r
- 0 . 1 7 7 13 - 0 . 0 4 3 24
(0.7937) (0.11127) ((J, H) ~ 0.31c5 60Bo7 t 0 . 2 7 9 17 64Ko13 See a l s o 184W-1
633003
~b" r162
Theory
C o n s i s t e n t with the s p i n sequence Theory J(D.Q)2(Q)0 f o r J = 1 and $ = 40.065 o r J = 3 and $ =-29 o r t0.13. Not c o n s i s t e n t with J = 0 . 2, o r 4
Y Y Y Y Y Y
7T
r
A4
- 0 . 0 3 6 5 +0.219 6 60Bo7 - 0 . 0 2 7 3 +0.307 15 64Ko13 A-0.027 3A+O. 307 15
I. 3. o r 4
(0.8957)(0.11127)
62Bl12
7T
~" r
58617 58617
Consistent with the spin sequence 2(D,Q)2(Q)0 for $ = 15. Not consistent with J(D.Q)2(Q)0 for
(0.900 peak)(0.230. 0.2528, 0.3187) 58017 (0.900 peak)(0.1112. 0.216. 0.2528. 63Bi04 0.3187) (ce x 0.900 p e a k ) ( c e L 0.11127. Ece = 63Dz05 0.0780, 0.0870. 0.091)
0. 1112 0.216 0.2528 0.318 0.384 peak 0.540 0. 6424 0.793 0, 904 1.03 peak 1.16 peak
58617 60Bo7 See 184W-1
8
< 1 . 1 ns
~(0)
63Bi04
63Dz05
,,o
1.3ns 1.28 AI. 26
58617
(ceK 0.3842y) (ceK,ce L 0.25287)
0.1112 ! Y Y 0.2528] Y Y 0 540 Y Y 0. 6424 ] Y Y 0.790 peak Y Y Y N 0.900 peak Y Y N
T~
TT-delay
~" r
r
%" %" %"
YYYy YYYYYY YY YN 'Y Y Y Y YYY YN YYYYYYY y N P P P P P Y Ya Y Y YN YYYYP PP YN YYYPP
63Bi04 63Jo03
N
YN yyyap YNPYYYP YNPYYYP YN Y YN Y Coincidence observed N No coincidence P P o s s i b l e coincidence
Methods of Production
Assignment o f W's
Ref
(184)W(14-MeV d.2n) Studied T~ (T) 62Dz4, 63Dz04 184W(12- and 25-MeYd. 2n) 38-d a c t i v i t y assumed 63Bi04 185Re(pile n.2n) Studied T~i (T) 633003 Found 5% of decays were from 165-d a c t i v i t y W(10- and 20-MeV p . n ) 165-d not from 10-MeV 64Ha06
aNot c o n s i s t e n t with t h e p r o p o s e d l e v e l scheme b s e e n o n l y in t h e d e c a y o f 165-d 184Re CValue o f 0 . 3 8 5 g i v e n by 608o7 has been c o r r e c t e d 64Ko13 f o r a t t e n u a t i o n e f f e c t s hhdopted v a l u e
BI-1-76
by
m4Re -4 75 109 165-d0 0. 188-MeV M e t a s t a b l e - S t a t c Decay
r~
169 d 8 160 166 1~ ^165 d
165-d, O. 188-MeV M e t a s t a b l e - S t a t e Decay
T(I84Re)
63Jo03 64Ha06 65B108
79 XTl0 xTll ,XT12 T!3 ~14 T15 716 T17 T18 T19 720 721 722 723 X~24 XT25 726 x~27 X728 729
T(184Re) TI
400*(L) 400*(L)
(I L
5800
O.084 L/M = 2.0 0.08335 12 L:M:N=40:14:4 A0.0834
K
hI
h2
L3
M1
bl3
M5
w
30
I0
I00
28
I00
5
0.7
28
6
100
-
-
-
s ce 63Dz04 En ce 641Ia06
s~ ce 64Ha06 M4 Theory
Conversion in Re established 63Dz04. 64Ha06 0.105 A0.1047 2
72 2S0" ctK
3.3
64Dz07 s7r ce 64Ha06
K
L1
h2
L3
M
N
100 I00
20 c ~2
4.9 6.5
-
14
100 100 100
15 11 15
1.5 121 4.1
0.16 108 2.5
w -
s ce 64Dz07 svr ce 64Ha06
S ce 63Dz04
15"
0.2166 3
17"
0.2528 ~
w*
0.3842 0.3867 0.538 0.6425
6 6 8 9
w* w* w* w*
0.7934 0.8960 0.9044 0.9216
12
W* w*
13
I6 1~
3,7"L 1.2" 6.4* 0.19" 0.25* 0.66* 0.14" 0.12' 0.063* 1.6" 0.83* 1.4" 0.14' 0.011" 0.021" 0.010" 0.039*
0.218 0.241 0.253 0.344 0.370 0.382
64Iia06 64Dz07
200* L 214" h
snce x0.0331 x0.0468 0.0553 0.0637 x0.0983
1 1 I I
TT
(ce L 0 . 0 8 3 4 7 ) ( c e K 0.1047)/)
s ce 64Dz07 s ce 64Dz07
s ce 65Dz01 (cetl N 0.0553+ce L 0.0637y)(ce~N 0.0553+ ce L 0.06377, ce L 0.1112T, ceM~ 0.1112y, ce K 0.1612y, ce L 0.16127)
L1/M=4 L2:L3:M~40:35:20
2
0. 111 s ce 63Dz04 0.1112 2 K:L2:L3:M:N= s~ ce 64Ha06 > 80:110:94:55:15 A0.1112 E2 See 184Re. g . s . - d e c a y
w* h I 0.1520 2
s~ ce 64Ha06
T8
0.163 0. 1612 2 A0.1612
scin 63Jo03 STT ce 64Ha06
(C%N 0.1047+ce L 0 . 1 1 1 2 y ) ( c e L 0.06377, ceMN 0.06377, ce L 0.0834y, C%N 0.08347, ce K 0.2528y. ce L 0.25287) (ce L 0,1047§
K/L 1 > 4
s ce 64Dz07
64Ha06
77
32*
3.3
0.540 0.643 0.771 0.793 0.896 0.904 0.922 1.011 1.024 1.106 I. 116 1.170 1.265 1.373
No(ce 0 . 0 8 3 4 7 ) ( ce 0.0553, 0. 1112"/) No(ce 0 . 1 1 1 2 T ) ( c e 0.16127) L1 L1 L1 L2 w* L 1
ffi
"Relative ceK-intenslty (except where noted) I00' corresponds to 12 eeK's per 100 decays
7(Is4w) T l to T 5 w* 14" 60* 40*
K/L
Ml Theory E2 Theory $2=0.01
Conversion in Re established TIT2 coincidences established
T6
continued swce 64Ha06
continued
CLine Is n o t completely r e s o l v e d AAdopted v a l u e XNot shown on level scheme B1-1-77
K 0 . 1 6 1 2 ) ' ) ( c e L 0~05537, ceMN 0.05537, ce L 0.08347, C%N 0.08347)
t84Re -:5
5
165-d, 0.188-MeV M e t a s t a b l e - S t a t e Decay
TT-delay (ce L 0.0834T)(ce L 0.1047Y)
continued
T~ ~2 ns
65Dz01
(ce 0.0553, 0.1612, 0.2166T)(ce 0.11127) 25 p s 65Dz01
For o t h e r TT, T T - d e l a y and f o r ~ ( 0 ) , see 184Re, Ground-State Decay
WW(0,H) r e s u l t s ,
Assignment 185Re(n,2n) chem 184W(2O-MeV p , n ) Not 184W(IO-MeV p,n) p 38-d 184Re from conversion in Re of 0.0834 and 0.1047 ~'s
63Jo03 64HaO6 64Ha06 64Ha06
See also Assignment la4Re-3
Added in Proof
T(184W) a
65Jo08
13t x0.1042 5 36t 0.1109 8 . 4 t 0.1604 6 15.4t 0.2155 6 1 . 9 t x0.2260 9 20.4t 0.2525 5 7 . 6 t 0.3179 6 4 . 3 t 0.3847 8 5.2T
5.9t 1.5t 87.9t
45.1t 100t 12.2t 0.317 1.5t 0.76t 0.088t 1.62t
0.5376 12 0.6413 15
0.7699 0.7922 0.8949 0.9032 0.9213 1.0102 1.0228 1.1104 X1.1213 1.1740
8 5 7 5 5 15
13 II
20 6
xi.220 0.22 0.22
TT
broad peak
1.2746 12 1.384 2
No (0.21b')') (7)
653008
~Relative photon intensity asource
was
a 150-d
old mixture of 38-d and 165-d 184Re
made by 185Re(n.2n) chem XNot shown on level scheme B1-I-78
184.-,
z6u%8-' Ground S t a t e
M a s s - S p e c t r o m e t e r Data
Abundance 0.018% ~nA < 200
59Full 65Sigm
Mass-Doublet Measurements
No a - a c t i v i t y
T~i > 1017y
for 1.5~E~3.7
Ppl
56P16
Reaction Data
Reactions
184W(a,4r~,)
E= = 52
scin 65La02
Ep = 14
sd ce 65Sali
(0.11981 (0.2640) (0.392) 0.500 Io 0 . 6 0 2 15
185Re(p, 2nT)
0.122 0.265 0.392 0.504 0.802 0.924
1
1 2
60Bh2 See 65Mass
K/L = 2.3 2 K/L = 2.8 8
4 7 7
BI-I-q9.
184 77
Ir
107
-I Ground-State
Decay
Ground-State
60Ba43 61Di4
3.1h3
3.2 2 ^3.2 h
TT
Decay
continued
0.1198, 0.2640 and 0.3912T's are in cascade
soin
61Di4
T(*a40s) T1
0.1200 5 0.1197 3
4.2"(L)
1o0t
0.125 5 0.120 I 0 ~0.1198
L/M=2.3 4 s c e 60Ba43 LI2:L3:M:N = s d ce 60Ba43 1.15 25:1:0.70:0.25 scin 61Di4 scin 630r08
LI2/L3= 1.3
Assignment and (l~5)Lu(12C,3n) chem Genetics No indication of 3-h I r parent in separated 0s fraction
a L = 1.3 E2 T h e o r y
T ' s seen are same as those known to be in 1840s from 184W(a,4n) and 185Re(p,2n) reactions T2
l.O* 203t
0.2640 t 0.267 5 0 . 2 6 0 10
K:L:M= 1.4 3:1:0.4
K/L-2.3
2
s c e 60Ba43 scin 61Di4 scin 630r08 S e e 1840s-I
^0.2640 K/L = 2.0
T 3 0.26" 871
0.3912 1 0.392 5 0 . 3 9 0 10
a K = 0.081
K/L = 4 . 3
K/L - 2 . 8 8
E2 Theory
s ce 60Ba43 scin 61Di4 scin 630r08 See 1840s-1
^0.3912 K/L - 3 . 1
T4 tot 7 5 7 t Xo.511
a K " O . 031
E2 T h e o r y
scin
61Di4
possibly T•
~x0.835 =x0.960 =Xl.090 E~(max) ~ 4 . 3
*Relative ceK-intensity "(except ce L for T1) ~Relative photon intensity
B1-1-80
61Di4
184_ 78Pt!o6-1 20-m State Decay
r89
2.6-h State Decay
20 m 2 20 m 2 A20 m
63Gr08 65Si03
2.6 h 6
Assignment 4.48 2 4.47 2 A4.47
p of a 3-h Ir activity experiment
ic 630r08 ic 65Si03
T(IS4Ir) s e i n 63Gr08
x0.155 10 J~ T ~ = 2 0 m 5 x0.190 I 0
Assignment 174yb(160.6n) excitation function
65Si03
42-m S t a t e Decay
r~
T(184ir)
42 m 3
65QaOl
s c i n 65Qa01
x0"68) Xl.72 T89 m Xl.85
T(IS40s)
s c i n 65Qa01
0.125
x1.18 Xl.40
Assignment
1
T89 3 h
may be 186pt
p 3 . 2 - h 184Ir from m i l k i n g e x p e r i m e n t and from agreement o f 0.125 and 1.18 T ' s w i t h 0.1198 and = l . 0 9 0 T ' s known in 184Ir decay 65QaOl AAdopted v a l u e XNot shown on l e v e l scheme
Bl-l-81
60~Ia28
from m i l k i n g 60Ma28