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1147. Applications of fibre optic faceplates in cathode-ray tubes
455
Classified Abstracts 1143--1156
36.
33 : 47 1143. Influence of residual gas pressure on dark currents in
(ltaly)
photomultiplier tubes.
An experimental set-up enabled the multiplier performance to be studied over a series of gas pressures ranging from 10 -3 to 10 -1° torr. The value of the dark current Ia depends on a variety of factors, such as field emission, light feed-back, etc. Ionization of the residual gases also plays an important part and the authors investigated this effect more fully in the case of caesium vapour. E. Kausky and B. Otrin, Nuovo Cimento (Ser. 1), 1 (2), 1963, 838844. 33 : 41 1144. The effect of carbon in cathode metals on residual gases in
electron tubes.
(Italy)
It has been established that any CO found in the residual gas at the end of normal tube processing is due to carbon present in the metal of the cathode assembly. The effect persists down to very low carbon levels of the order of .001 per cent. The mechanism of the CO evolution and the origin of the oxygen are aspects of the phenomenon which are not yet properly understood. M. Feinleib, Nuovo Cimento Suppl. 1, (Ser. 1), 1 (2), 1963, 710720. 33 : 41 1145. Mobility of metal particles on a graphite substrate. J. M. Thomas and P. L. Walker, Jr., J. Chem. Phys., 41 (2), 15 July 1964, 587-588. 33 : 56 1146. Cold-cathode tube applications. (Great Britain) Brief report of symposium organized by the Institution of Electronic and Radio Engineers in March 1964. Industr. Electron., 2, June 1964, 284--6. 33 : 56
1147. Applications of fibre optic faceplates in cathode-ray tubes.
36
Present status of vacuum degassing in the Japanese steel industry. See Abstr. No. 1154. 36 : 28 : 42 1151. Oxygen outgassing caused by electron bombardment of glass.. (Italy) Outgassing data are submitted for 12 commercial glasses subjected to 150/z A of 20 keV electron bombardment on a 3 x ~ in. area. The results show that Na~O and K20 are mainly responsible for the oxygen release in 4 component glasses. J. L. Line-Weaver, Nuovo Cimento Suppl., 1, (2), 1963, 530-547. 36 : 21 1152. Gas evolution during baking of sputter-ion pumps. (Italy) In order to reach a vacuum of the order of 10-11 torr with a sputter-ion pump, it is necessary to subject both pump and system to a preliminary baking at 450-500°C. Using a bakeable mass spectrometer the authors investigated the gas desorption during this period. J. C. Rivi6re and J. D. Allinson, Nuovo Cimento Suppl., (Ser. 1), 1 (2), 1963, 520-529. 36 : 41 : 22
1153. Mass spectrometer investigations of the degassing of Molybdenum, Tungsten and Niobium on heating them in vacuo.
(U.S.S.R.) The degassing rate at temperature between 1000 ° and 2000°C was estimated from the change in pressure of the degassing chamber as recorded on a mass spectrometer. The principal gases evolved were Hz and CO. The rate of removal of CO from a given metal is very much greater than the rate of diffusion of C and O taken separately. (U.S.S.R.) L. N. Ryabchikov, Ukrayin Fiz. Zh., 9 (3), 1964, 293-302.
37.
(Great Britain) L. S. Allard, lndustr. Electron., 2, June 1964, 263-5. 33 : 56 1148. Multiple pinhole camera for mieroelectronics.
(Great
Britain) T. E. Price, Industr. Electron., 2, Feb. 1964, 85-88.
Drying, Degassing and Concentration
Metallurgy, Inorganic Chemistry, Analytical Chemistry
A vacuum-tight shutter for a laboratory mixer. 1116.
37 See Abstr. No.
37 : 36 : 41 1154. Present status of vacuum degassing in the Japanese steel
industry.
(Japan)
M. Segawa and T. Otani, J. Vac. Soe. Japan, 7 (1), 1964, 10-19.
34.
37 : 30
H i g h Altitude and S p a c e Technology
1155. Mass sepctrometer for the study of sputtering. 34
1149. A controlled atmospheres fatigue machine. (Great Britain) A reverse plane bending fatigue machine is described which can operate in a controlled atmosphere or in a vacuum of 10 -6 torr. The importance of an impermeable specimen enclosure is stressed. K. U. Snowden, J. Sci. Instrum., 41 (7), 1964, 470-471. 34 1150. Artificial satellites and space research. (Italy) The interesting possibilities of exploring the solar system with artificial satellites are discussed. A. Mammano, Ricerca Sei., 4 (2), 1964, 63-68.
35.
Impregnation and P o t t i n g
Metal-coated fibres and fibre reinforced metals. 1122.
35 See Abstr. No.
(Great
Britain) A single focus mass spectrometer system has been built to study sputtering of surfaces by ion bombardment. The sputtered ions are mass analysed directly. Sputtered neutrals are ionized and detected, using a pulsed source detector system which allows the measurement of the ionized sputtered neutral beam intensities to be made even in the presence of much larger signals from residual gases in the instrument. (U.S.A.) (Authors) A. J. Smith et al., Vacuum, 14 (7), July 1964, 263-267. 37 : 41 1156. Effect of water vapour on the sintering of M g O (Great
Britain) Rate of crystal agglomeration and growth during vacuum sintering is accelerated more than 11300 times in the presence of traces of water vapour (less than 5 torr). A probable mechanism to account for this based on surface diffusion due to absmbed H20 is discussed. (Great Britain) P. J. Anderson and P. L. Morgan, Trans. Faraday Soc., 60 (5), May 1964, 930-937.
Classified Abstracts 1143--1156
36.
33 : 47 1143. Influence of residual gas pressure on dark currents in
(ltaly)
photomultiplier tubes.
An experimental set-up enabled the multiplier performance to be studied over a series of gas pressures ranging from 10 -3 to 10 -1° torr. The value of the dark current Ia depends on a variety of factors, such as field emission, light feed-back, etc. Ionization of the residual gases also plays an important part and the authors investigated this effect more fully in the case of caesium vapour. E. Kausky and B. Otrin, Nuovo Cimento (Ser. 1), 1 (2), 1963, 838844. 33 : 41 1144. The effect of carbon in cathode metals on residual gases in
electron tubes.
(Italy)
It has been established that any CO found in the residual gas at the end of normal tube processing is due to carbon present in the metal of the cathode assembly. The effect persists down to very low carbon levels of the order of .001 per cent. The mechanism of the CO evolution and the origin of the oxygen are aspects of the phenomenon which are not yet properly understood. M. Feinleib, Nuovo Cimento Suppl. 1, (Ser. 1), 1 (2), 1963, 710720. 33 : 41 1145. Mobility of metal particles on a graphite substrate. J. M. Thomas and P. L. Walker, Jr., J. Chem. Phys., 41 (2), 15 July 1964, 587-588. 33 : 56 1146. Cold-cathode tube applications. (Great Britain) Brief report of symposium organized by the Institution of Electronic and Radio Engineers in March 1964. Industr. Electron., 2, June 1964, 284--6. 33 : 56
1147. Applications of fibre optic faceplates in cathode-ray tubes.
36
Present status of vacuum degassing in the Japanese steel industry. See Abstr. No. 1154. 36 : 28 : 42 1151. Oxygen outgassing caused by electron bombardment of glass.. (Italy) Outgassing data are submitted for 12 commercial glasses subjected to 150/z A of 20 keV electron bombardment on a 3 x ~ in. area. The results show that Na~O and K20 are mainly responsible for the oxygen release in 4 component glasses. J. L. Line-Weaver, Nuovo Cimento Suppl., 1, (2), 1963, 530-547. 36 : 21 1152. Gas evolution during baking of sputter-ion pumps. (Italy) In order to reach a vacuum of the order of 10-11 torr with a sputter-ion pump, it is necessary to subject both pump and system to a preliminary baking at 450-500°C. Using a bakeable mass spectrometer the authors investigated the gas desorption during this period. J. C. Rivi6re and J. D. Allinson, Nuovo Cimento Suppl., (Ser. 1), 1 (2), 1963, 520-529. 36 : 41 : 22
1153. Mass spectrometer investigations of the degassing of Molybdenum, Tungsten and Niobium on heating them in vacuo.
(U.S.S.R.) The degassing rate at temperature between 1000 ° and 2000°C was estimated from the change in pressure of the degassing chamber as recorded on a mass spectrometer. The principal gases evolved were Hz and CO. The rate of removal of CO from a given metal is very much greater than the rate of diffusion of C and O taken separately. (U.S.S.R.) L. N. Ryabchikov, Ukrayin Fiz. Zh., 9 (3), 1964, 293-302.
37.
(Great Britain) L. S. Allard, lndustr. Electron., 2, June 1964, 263-5. 33 : 56 1148. Multiple pinhole camera for mieroelectronics.
(Great
Britain) T. E. Price, Industr. Electron., 2, Feb. 1964, 85-88.
Drying, Degassing and Concentration
Metallurgy, Inorganic Chemistry, Analytical Chemistry
A vacuum-tight shutter for a laboratory mixer. 1116.
37 See Abstr. No.
37 : 36 : 41 1154. Present status of vacuum degassing in the Japanese steel
industry.
(Japan)
M. Segawa and T. Otani, J. Vac. Soe. Japan, 7 (1), 1964, 10-19.
34.
37 : 30
H i g h Altitude and S p a c e Technology
1155. Mass sepctrometer for the study of sputtering. 34
1149. A controlled atmospheres fatigue machine. (Great Britain) A reverse plane bending fatigue machine is described which can operate in a controlled atmosphere or in a vacuum of 10 -6 torr. The importance of an impermeable specimen enclosure is stressed. K. U. Snowden, J. Sci. Instrum., 41 (7), 1964, 470-471. 34 1150. Artificial satellites and space research. (Italy) The interesting possibilities of exploring the solar system with artificial satellites are discussed. A. Mammano, Ricerca Sei., 4 (2), 1964, 63-68.
35.
Impregnation and P o t t i n g
Metal-coated fibres and fibre reinforced metals. 1122.
35 See Abstr. No.
(Great
Britain) A single focus mass spectrometer system has been built to study sputtering of surfaces by ion bombardment. The sputtered ions are mass analysed directly. Sputtered neutrals are ionized and detected, using a pulsed source detector system which allows the measurement of the ionized sputtered neutral beam intensities to be made even in the presence of much larger signals from residual gases in the instrument. (U.S.A.) (Authors) A. J. Smith et al., Vacuum, 14 (7), July 1964, 263-267. 37 : 41 1156. Effect of water vapour on the sintering of M g O (Great
Britain) Rate of crystal agglomeration and growth during vacuum sintering is accelerated more than 11300 times in the presence of traces of water vapour (less than 5 torr). A probable mechanism to account for this based on surface diffusion due to absmbed H20 is discussed. (Great Britain) P. J. Anderson and P. L. Morgan, Trans. Faraday Soc., 60 (5), May 1964, 930-937.