- Email: [email protected]
He3 cryostat with adsorption pumping
Classified abstracts 796--824 40 796. Electron-impact energy spectra of acetone and 2-butatone.
( USA ) S M Silverman and E N Lassettre, J Chem Phys, 43 (1), July 1965,
194-195. 40 797. Theoretical study of the monolayer adsorption of argon on a xenon surface. (USA) W A Steele and E R Kebrekns, J Chem Phys, 43 (1), July 1965,
292-304. 40 798. Reactions of atomic oxygen with acetylene. I. Kinetics and mechanism. (USA) C A Arrington et al, J Chem Phys, 43 (2), July 1965, 525-571. 40 799. Collision cross-section study of COs. (USA) E N Lassettre and J C Shiloff, J Chem Phys, 43 (2), July 1965,
560-571. 4O 800. Mass-spectrometric studies of gaseous oxides and suboxides of scandium, yttrium and lanthanum. (USA) S Smoes et al, J Chem Phys, 43 (2), July 1965, 732-736. 40 801. Electron affinity of oxygen. (USA) F A Elder et al, J Chem Phys, 43 (2), July 1965, 758-759. 4O 802. Oscillator strengths of several peaks in the electron-impact spectrum of carbon dioxide. Spin-orbit coupling. (USA) V D Meyer and E N Lassettre, J Chem Phys, 42 (10), May 1965,
3436-3441. 40 803. Ionization of atoms by collision with excited atoms. (USA) K Katsuura, J Chem Phys, 42 (11), June 1965, 3771-3775.
41. Metals and alloys 41 : 24 UHV high temperature valves with gold-wire sealing. See abstract number 785. 41 814. Adsorption of potassium on tungsten. (USA) L D Schmidt and R Gomer, J Chem Phys, 42 (10), May 1965,
3573-3598. 41 815. Surface ionization of niobium. (USA) M D Scheer and J Fine, J Chem Phys, 43 (10), May 1965,3645-3648. 41 816. On the effect of adsorbed particles on the accommodation coefficients. (USA) H Shin, J Chem Phys, 42 (10), May 1965, 3442-3445. 41 817. Saturating rate law in chemisorption and oxidation. (USA) R Hooke and T P Brody, J Chem Phys, 42 (12), June 1965, 4310-
4311. 41 818. Fraction of effusing molecules striking a collector plate over a circular cylindrical orifice. (USA) A R Miller, J ChemPhys, 42 (12), May 1965, 3734. 41 819. Condensation of tungsten on tungsten in atomic detail: observation with the field-ion microscope. (USA) T Gurney Jr and F Hutchinson, J Chem Phys, 42 (11), June 1965,
3939-3942. 41 820. Mass-spectrometric study of the oxidation of tungsten. (USA) P O Schissel and O C Trulson, J Chem Phys, 43 (2), July 1965,
737-743.
4O 804. Direct observation of the decomposition of multiply charged ions into singly charged fragments. (USA) K E McCulloch et al, J Chem Phys, 42 (10), May 1965, 3501-3509. 40 805. Mass-spectrometric study of the bimolecular formation of diatomic argon ion. (USA) P M Beeker and F W Lampe, J Chem Phys, 42 (11), June 1965,
3857-3863. 40 806. Kinetics of the reactions H-p-H2 = o - H s - H . (USA) W R ~Schulz and D J LeRoy, J Chem Phys, 42 (11), June 1965,
3869-3873. 40 807. Cross sections for dissociative ionization of molecules by electron impact. (USA) D Rapp et al, J Chem Phys, 42 (12), June 1965, 4081-4085. 40 808. Crossed-beam investigation of NsD + production in N2-Ds collisions. (USA) B R Turner et al, J Chem Phys, 42 (12), June 1965, 4088-4096.
4O 809. Generalised oscillator strengths and electronic collision crosssections for nitrogen at excitation energies above 10 eV. (USA) S M Silverman and E N Lassettre, J Chem Phys, 42 (10), May
42. Glass, ceramics and refractory oxides 42 821. Glass ceramics: How they perform--where to use them. (USA) B R Emrich, Mater Des Engng, 62 (1), July 1965, 95-104.
47. Outgassing data, vapour pressure data, gettering data, residual gases in vacuum systems, residual gas analysis 47 822. Study of different methods of evacuating ultra-high vacuum systems and analysis of the residual gases. (France) The residual gases in ultra-high vacuum systems evacuated by various types of pump have been examined. The results showed that (i) in an unbaked system, water vapour is the major residual component, (ii) Hs, Ns, CO and COs are usually found in systems pumped by getter-ion pumps, sputter-ion pumps and cryo-pumps, and (iii) He, CH4 and Ar are also found in some other types of system. It is considered that the best results can be obtained from a bakeable system evacuated by the types of pumps enumerated in (ii) above. (A H T) T Tom, Le Vide, 19, Nov-Dec 1964, 449-458, (in French).
1965, 3420-3429.
48. Heating, refrigeration, ultrasonics, centrifuging
40 810. Determination of molecular excitation potentials by electron impact. An anomaly in the Ns spectrum. (USA) E N Lassettre et al, J Chem Phys, 42 (10), May 1965, 3429-3435. 4O 811. Diffusion coefficients of the system He--Ts and He-Th.
48 : 33 A versatile and reliable eryoscopic level detector. See abstract number 793. 48 823. A simple, continuous level indicator for cryogenic liquids.
( USA )
A thermocouple sensing element is found useful for Dewars with parallel, low-conducting walls. Accuracy of ~0.1 cm is possible. Temperature at a point on the wall is dependant on the distance from the liquid level. T Ashworth, J scient Instrum, 42 (5), May 1965, 351-352. 48 824. He 3 cryostat with adsorption pumping. (Great Britain) Details are given of a pump incorporating a He ~ refrigerant bath with activated charcoal, with which temperatures down to 0.3°K are achieved. C F Mate et al, Rev scient Instrum, 36 (3), March 1965, 369-373.
I Amdur and A P Malinauskas, J Chem Phys, 42 (10), May 1965,
3355-3360. 4O 812. Diffusion coefficients of hydrogen isotopes. (USA) I Amdur and J W Beatly Jr, J Chem Phys, 42 (10), May 1965,
3361-3364. 4O 813. Diffusion coefficients of Ts-Hs and Ts-Ds: the non-equivalence of the H2 and Ds cross-sections. (USA) E A Mason et al, J Chem Phys, 42 (10), May 1965, 3364-3366.
472
(Great Britain)
( USA ) S M Silverman and E N Lassettre, J Chem Phys, 43 (1), July 1965,
194-195. 40 797. Theoretical study of the monolayer adsorption of argon on a xenon surface. (USA) W A Steele and E R Kebrekns, J Chem Phys, 43 (1), July 1965,
292-304. 40 798. Reactions of atomic oxygen with acetylene. I. Kinetics and mechanism. (USA) C A Arrington et al, J Chem Phys, 43 (2), July 1965, 525-571. 40 799. Collision cross-section study of COs. (USA) E N Lassettre and J C Shiloff, J Chem Phys, 43 (2), July 1965,
560-571. 4O 800. Mass-spectrometric studies of gaseous oxides and suboxides of scandium, yttrium and lanthanum. (USA) S Smoes et al, J Chem Phys, 43 (2), July 1965, 732-736. 40 801. Electron affinity of oxygen. (USA) F A Elder et al, J Chem Phys, 43 (2), July 1965, 758-759. 4O 802. Oscillator strengths of several peaks in the electron-impact spectrum of carbon dioxide. Spin-orbit coupling. (USA) V D Meyer and E N Lassettre, J Chem Phys, 42 (10), May 1965,
3436-3441. 40 803. Ionization of atoms by collision with excited atoms. (USA) K Katsuura, J Chem Phys, 42 (11), June 1965, 3771-3775.
41. Metals and alloys 41 : 24 UHV high temperature valves with gold-wire sealing. See abstract number 785. 41 814. Adsorption of potassium on tungsten. (USA) L D Schmidt and R Gomer, J Chem Phys, 42 (10), May 1965,
3573-3598. 41 815. Surface ionization of niobium. (USA) M D Scheer and J Fine, J Chem Phys, 43 (10), May 1965,3645-3648. 41 816. On the effect of adsorbed particles on the accommodation coefficients. (USA) H Shin, J Chem Phys, 42 (10), May 1965, 3442-3445. 41 817. Saturating rate law in chemisorption and oxidation. (USA) R Hooke and T P Brody, J Chem Phys, 42 (12), June 1965, 4310-
4311. 41 818. Fraction of effusing molecules striking a collector plate over a circular cylindrical orifice. (USA) A R Miller, J ChemPhys, 42 (12), May 1965, 3734. 41 819. Condensation of tungsten on tungsten in atomic detail: observation with the field-ion microscope. (USA) T Gurney Jr and F Hutchinson, J Chem Phys, 42 (11), June 1965,
3939-3942. 41 820. Mass-spectrometric study of the oxidation of tungsten. (USA) P O Schissel and O C Trulson, J Chem Phys, 43 (2), July 1965,
737-743.
4O 804. Direct observation of the decomposition of multiply charged ions into singly charged fragments. (USA) K E McCulloch et al, J Chem Phys, 42 (10), May 1965, 3501-3509. 40 805. Mass-spectrometric study of the bimolecular formation of diatomic argon ion. (USA) P M Beeker and F W Lampe, J Chem Phys, 42 (11), June 1965,
3857-3863. 40 806. Kinetics of the reactions H-p-H2 = o - H s - H . (USA) W R ~Schulz and D J LeRoy, J Chem Phys, 42 (11), June 1965,
3869-3873. 40 807. Cross sections for dissociative ionization of molecules by electron impact. (USA) D Rapp et al, J Chem Phys, 42 (12), June 1965, 4081-4085. 40 808. Crossed-beam investigation of NsD + production in N2-Ds collisions. (USA) B R Turner et al, J Chem Phys, 42 (12), June 1965, 4088-4096.
4O 809. Generalised oscillator strengths and electronic collision crosssections for nitrogen at excitation energies above 10 eV. (USA) S M Silverman and E N Lassettre, J Chem Phys, 42 (10), May
42. Glass, ceramics and refractory oxides 42 821. Glass ceramics: How they perform--where to use them. (USA) B R Emrich, Mater Des Engng, 62 (1), July 1965, 95-104.
47. Outgassing data, vapour pressure data, gettering data, residual gases in vacuum systems, residual gas analysis 47 822. Study of different methods of evacuating ultra-high vacuum systems and analysis of the residual gases. (France) The residual gases in ultra-high vacuum systems evacuated by various types of pump have been examined. The results showed that (i) in an unbaked system, water vapour is the major residual component, (ii) Hs, Ns, CO and COs are usually found in systems pumped by getter-ion pumps, sputter-ion pumps and cryo-pumps, and (iii) He, CH4 and Ar are also found in some other types of system. It is considered that the best results can be obtained from a bakeable system evacuated by the types of pumps enumerated in (ii) above. (A H T) T Tom, Le Vide, 19, Nov-Dec 1964, 449-458, (in French).
1965, 3420-3429.
48. Heating, refrigeration, ultrasonics, centrifuging
40 810. Determination of molecular excitation potentials by electron impact. An anomaly in the Ns spectrum. (USA) E N Lassettre et al, J Chem Phys, 42 (10), May 1965, 3429-3435. 4O 811. Diffusion coefficients of the system He--Ts and He-Th.
48 : 33 A versatile and reliable eryoscopic level detector. See abstract number 793. 48 823. A simple, continuous level indicator for cryogenic liquids.
( USA )
A thermocouple sensing element is found useful for Dewars with parallel, low-conducting walls. Accuracy of ~0.1 cm is possible. Temperature at a point on the wall is dependant on the distance from the liquid level. T Ashworth, J scient Instrum, 42 (5), May 1965, 351-352. 48 824. He 3 cryostat with adsorption pumping. (Great Britain) Details are given of a pump incorporating a He ~ refrigerant bath with activated charcoal, with which temperatures down to 0.3°K are achieved. C F Mate et al, Rev scient Instrum, 36 (3), March 1965, 369-373.
I Amdur and A P Malinauskas, J Chem Phys, 42 (10), May 1965,
3355-3360. 4O 812. Diffusion coefficients of hydrogen isotopes. (USA) I Amdur and J W Beatly Jr, J Chem Phys, 42 (10), May 1965,
3361-3364. 4O 813. Diffusion coefficients of Ts-Hs and Ts-Ds: the non-equivalence of the H2 and Ds cross-sections. (USA) E A Mason et al, J Chem Phys, 42 (10), May 1965, 3364-3366.
472
(Great Britain)