Cryogenic pump tests with hydrogen under ultra-high vacuum conditions with range 4.2K and 2.5K

Cryogenic pump tests with hydrogen under ultra-high vacuum conditions with range 4.2K and 2.5K

Classified A b s t r a c t s 3 9 2 - - 4 0 2 163 Vacuum Apparatus and Auxiliaries 20. Pumping Systems 20 17 Cr~ogemc pump tests with hydrogen und...

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Classified A b s t r a c t s 3 9 2 - - 4 0 2

163

Vacuum Apparatus and Auxiliaries 20.

Pumping

Systems

20 17 Cr~ogemc pump tests with hydrogen under ultra-high ~acuum conditions with range 4 2K and 2.5K See Abstr N o 373 20 392. P r e h m m a r ) e s t i m a t e s for steam-let air ejectors. A n o n , Chem Enzng 71 13~, 1964 120-122

21.

I/." S 4 )

22 12 Theory of Imeant~ of hot cathode ionization gauge. See Ab~tr N o 349 22 19 14 The calculation of radiometer forces on m e a s u r i n g s y s t e m s exhibiting rotary s~mmetr~. See Ab~tr N o 352

Pumps and Pump Fluids

21 I0 The pumping speed o f titanium sputter pumps in ultra-high ~aeuum See A b s t r N o 344 21 25 11 Desorption experJn)ents in an ultra-high ) a c u u m s~stem, pumped h,~ molecular siege trapped oil diffusion pumps See Ab~tr N o 345 21 Desorption or'gases m getter-ion pumps. See ~b~tr N o 366

22 14 M a s s spectrometer sampling through a small hole m the adiabatic flow region See Ab~tr N o 356

16

21 17 14 The Ihermo-moleeular pump. a ne~ l,~pe of ~acuum pump See +Xb~tr N o a53 21 393 Studies on a mechanical booster ~acuum pump (Japon) M Suznki ~_ec Pap In~t P h ~ Chem Re~ 57 12), Jtlne 196"£ 79-81

22 27 The M C 1 0 a n a l s s i s cell of the H e h t e s t 2002 leak detector. See Abstr N o 410 22 16 I he interaction of gases and solids in practical desices. See Ab~tr N o 370 ,,),~

395 Higher pressures ( ~ 1 torr) m a s s spectrometer T ~A M a r t m e t a / , S c w n c e 138 12 Oct 1962, 77-83

(/.' S 4 )

22 396 Regulation of iomzation gauge emission current to better than .05 per cent ( L' S -1 ) K '~ Yee a n d R J C a r p e n t e r R(,i Set hl~oUm 34 (10), Oct 1963 1101 .,) ..)

397. LIItra-hlgh ~acuum ionization gauges ~lth directly heated eleclrodes. (China) C ~ H x ~ a e t a l . -1ctaPh~s 5tnlCa 19121 1903 83-89

21 394 -~ diffusion pump ~lth a new nozzle (G~)/n~,n~) H B(,)llinger, E~p/ Te(hn Ph~ 1114),190~,312-~10

22.

Gauges

22 12 Partial pressure analysis and partial pressure gauges See ~b~tr N o 351 22 14 Theory of the Klumb-Schwarz type radiometer gauge. See Ab~tr N o 354 22 18 C o m p a r a t i v e m e a s u r e m e n t s between the Bayard-Alpert gauge and L a f f e r t y ' s m a g n e t r o n g a u g e See ~ b s t r N o 378 22 38 The m a s s spectrometric stud~ of the reaction o f m e t h ) l radicals with oxygen See A b s t r N o 439 22 38 A m a s s spectrometer for stud)rag chemical reactions. See A b s t r N o 441) 22 16 G a s desorption from the ionization g a u g e and the pressure in high,~acuum s } s t e m s of small volume. See A b s t r N o 362 22 61 12 Problems in establishing s t a n d a r d s for vacuum m e a s u r e m e n t and in calibrating ~aeuum gauges. See A b s t r N o 449

-).-)

398. Differential m a n o m e t e r of high sensiti~iU). 4Ftltttt£,) 1 L Peube C R -1cad A¢/ (France), 257 117), 21 Sept 2"~97-2399

196],

22 14 399. Ionization gauges as a thermal condueti~it) ~aeuum gauge. ( L S -1) -~ D C r o ~ e l l and E L Foles, Re~ Sol In~ttum 3 4 ( 7 ) . 1963, -) ,q_l 400 Quadrupole high frequency m a s s spectrometer for residual anal~sm in high vacuum systems. (,G~tman~) q-he q u a d r u p o l e tube is 20cm long, o f all metal c o n s t r u c t i o n a n d bakeable up to 450 C N o deflecting m a g n e t [7 used, the m a s s s e p a r a t i o n being p e r f o r m e d b~ m e a n s o f a hJgh frequency electric field T h e ion source Is In the form of a n u d e s y s t e m a n d the n o r m a l ion collector can be e x c h a n g e d against a secondar3 electron m u h ] p h e r T h e ma~s range is f r o m 1 to 120, ~ l t h a resolution M M o f a p p r o x i m a t e l y 100 F o r 100 per cent t r a n s m i s s i o n , the sens[tt~lt3 is o f the o r d e r o f 2 10 ~ A ' t o r r The lowest detectable partial pressure ),, m the region o f 10 -t3 torr ( G e r m a n ) ) ~A

C B r u n n e e et al

J

I/a/~ttltm TechnA, 13 12), M a r c h 1964, 35-42 22

401. Ionization-type vacuum gauge ~ith electron multiplier output. ( U S -1) J B H u d s o n et a l , Rer Sc~ I n s t r u m , 35 [I), Jan 1964, 127 22

22 18 Difference between nude and enclosed ion gauges on an oil-free system. See A b s t r N o 379

402. A n o m a l o u s residual currents with ultra-high ~aeuum use o f Bayard-AIpert iomzatton gauges. (U S A ) T E H a r t m a n , Rel Set l n s t r u m , 34 111), No~, 1963, 1190-1195.