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Stimulationm of ZnS phosphors by the far infrared
Classified
abstracts
294-309
32 : 63 294. Bibliographies in nuclear science and technology. Accelerators. (Germany) A bibliography of 432 references on various aspects of particle accelerators is presented. Included also are author, patent, report number and subject indexes. W Mausberg, Rep AEDC-18-07, Nov 1967, 122pages (Sci Tech Aerospace Reps, 5 (16), 2873, N67-29334). 32 295. Related techniques in thermonuclear research. (USA) The problem of injection in thermonuclear plasma research and accelerator technology is discussed. The limitations on injection as it comes into play in the case of various plasma devices are expressed. D W Kerst, Rep COO-123344, March 1967, 12pages (Sci Tech Aerospace Reps, 5 (15), 2775, N67-28591). 32 296. Ion resonance probe for the measurement of plasma densities.
(Japan) The discharge tube used is a hot-cathode diffusion-type tube filled with mercury vapour at pressures of the order of 1O-J torr. The tube produces a quiescent uniform plasma and contains a disc probe and a cylindrical probe which are used for the measurement of the ion resonance and for the measurement of the electron density as a Langmuir probe. S Kiyama and K Kato, Japan J Appl Phys, 6 (8), 1967, 1002-1004. 32 297. The effect of gas pressure in rf ion sources. (Japan) Formulae and graphs are presented which show the relationship between the gas pressure in the ion source and the ion current extracted. S Kawasaki and K Ogawa, Japan J Appl Phys, 6 (7), 1967,900.
in the target, are stopped in the graphite from where they will easily diffuse out. (France) R Klapisch et al, Nucl Znstrum Methods, 53 (2), 1967, 216228 (in French). 33 301. Eleetroreflectance by adsorption of gas on zinc oxide. (Germany) The formation of space charge layers by adsorbed oxygen or atomic hydrogen changes the reflectance of zinc oxide crystals. This phenomena can be explained by the theory of “electronreflectance”. The experimental vacuum system (lo-‘-- lo-* torr) is described, and the results obtained are discussed. B Hoffmann, Z Phys, 206 (3), 1967, 293-308 (in German). 33 302. Theory of single-component streams of similarly charged particles. (USSR) Differential equations are solved to derive expressions for the conditions of origin of the single-component mode of a threedimensional stream of non-relativistic similarly charged particles and for the electrostatic potential distribution in the stream. S N Ogorodnikov, Radiotekh Elektron, 12 (9), Sept 1967, 1616-1623 (in Russian). 33 303. Transmission, reflection and adsorption of electrons in solid body thin films. (USSR) The coefficients of transmission, reflection, and adsorption of 430 keV electrons in thin self-supporting films of aluminium, copper, gold, germanium, and silicon, with thickness 5oo-4o,OOOA, were measured at 10-O torr. A Ya Vyatskin and V V Trunev, Radiotekh Elektron, 12 (9), Sept 1967, 1636-1641 (in Russian). 33 304. Demagnetization cryostat for Miissbauer effect experiments.
(Japan) 33. GENERAL PHYSICS AND ELECTRONICS 33 : 17 Stimulation of ZnS phosphors by the far infrared. See abstract number 209. 33 : 30 X-ray diffraction by multilayered thin film structures and their diffusion. See abstract number 270. 33 :48 Variable temperature liquid helium cooled platform for metallographic studies of superconducting materials. See abstract number 352. 33 298. Low pressure spark chamber-high resolution spectrometer for 1 GeV protons. (Holland) A low pressure magnetic spectrometer for 1 GeV protons utilizing wire spark chambers operated at 0.1 atm is described. Details on the operating characteristics of the low pressure spark chambers are given and an outline of the pressure regulating system is included. (USA) R J Sutter et al, Nucl Znstrum Methods, 54 (l), 1967, 71-76. 33 299. Wide gap spark chamber tilled with neon and ethanol or water vapours. (Holland) Wide gap spark chambers 10 x 10 x 15 cm3, made entirely of glass with epoxy, were used, being pumped to 3 x IO-” torr and filled with (1) neon, (2) neon plus saturated ethanol vapour, and (3) neon plus saturated water vapour. Influence of ethanol and water vapour on dispersion and width of the tracks was studied for long time delays of high voltage pulses. (USSR) L P Kotenko et al, Nucl Znstrum Methods, 54 (l), 1967, 119-124. 33 300. On-line mass spectrometer for the study of short-lived isotopes. (Holland) A mass spectrometer is described which, used on-line with the extracted beam of an accelerator, allows the measurement of isotopic ratios of even the very short lived nuclides. The apparatus described, includes vacuum system, ion detection and counting equipment. It is a mobile type of installation and can be set in a few hours in the beam of an accelerator. The preparation of the target is the most delicate part of the technique, and examples are given of applications to various problems. The targets, heated to a temperature of about 15oo”C, are bombarded by a high energy proton beam and consists of a stack of metal and graphite slabs so that energetic recoils, originating
The construction of a cryostat for reaching 0.08-0.3”K liquid helium temperatures is described. Its operation and performance is discussed. M Shinohara et al, Japan J Appl Phys, 6 (8), 1967,982-990. 33 305. An infrared cell for studying adsorbed species at the gas-solid interface. (Great Britain) An infrared cell is described, which can be used at temperatures up to 500°C either under vacuum or in a controlled atmosphere. The cell is essentially a silica tube, having an outlet for vacuum or gas, another for a thermocouple, heater coil, water cooling and appropriate windows. C G A&stead et al, J Sci Znstrum, 44 (lo), 1967, 872-873. 33 306. Ion-bombardment level-crossing spectroscopy. (USA) The application of ion bombardment excitation to extend the range of excited states that can he studied by level-crossing spectroscopy, is reported. R D Kaul, J Opt Sot Amer, 57 (9), 1967, 1156-1157. 33 : 30 307. Exchange anisotropy in oxidized Pennalloy thin Alms at low temperatures. (USA) Oxidized Permalloy thin fdms exhibit uniaxial anisotropy at room temperatures, but at low temperatures develop a mixture of uniaxial and unidirectional anisotropies. Dependences on the thicknesses of the Permalloy and oxide layers are given to illustrate that these phenomena are related to the interfacial surface area. F B Hagedom, J Appl Phys, 38 (9), 1967, 3641-3645. 33 308. Effects of instabilities and scattering in electron beams in the absence of a magnetic field. (USA) The electron beams, focused by a space charge of 10 mm diameter at low voltage, in the absence of a magnetic field, undergo a rapid decrease in current. This decrease is a function of the axial distance from the gun. A positive oscillation source is formed and the electrons of the beam undergo a dispersion of the speed. M J Kofoid and P Zieske, Phys F&Is, 9 (ll), 1966, 2301-2303. 33 309. Wide-angle internal deflection structures of cathode-ray tubes. (USA) Studies were made to derive suitable forms of the focal length of a deflection system. Discussion led to the design of an electron gun, suitable for studies of dynamic correction of deflection defocusing 103
abstracts
294-309
32 : 63 294. Bibliographies in nuclear science and technology. Accelerators. (Germany) A bibliography of 432 references on various aspects of particle accelerators is presented. Included also are author, patent, report number and subject indexes. W Mausberg, Rep AEDC-18-07, Nov 1967, 122pages (Sci Tech Aerospace Reps, 5 (16), 2873, N67-29334). 32 295. Related techniques in thermonuclear research. (USA) The problem of injection in thermonuclear plasma research and accelerator technology is discussed. The limitations on injection as it comes into play in the case of various plasma devices are expressed. D W Kerst, Rep COO-123344, March 1967, 12pages (Sci Tech Aerospace Reps, 5 (15), 2775, N67-28591). 32 296. Ion resonance probe for the measurement of plasma densities.
(Japan) The discharge tube used is a hot-cathode diffusion-type tube filled with mercury vapour at pressures of the order of 1O-J torr. The tube produces a quiescent uniform plasma and contains a disc probe and a cylindrical probe which are used for the measurement of the ion resonance and for the measurement of the electron density as a Langmuir probe. S Kiyama and K Kato, Japan J Appl Phys, 6 (8), 1967, 1002-1004. 32 297. The effect of gas pressure in rf ion sources. (Japan) Formulae and graphs are presented which show the relationship between the gas pressure in the ion source and the ion current extracted. S Kawasaki and K Ogawa, Japan J Appl Phys, 6 (7), 1967,900.
in the target, are stopped in the graphite from where they will easily diffuse out. (France) R Klapisch et al, Nucl Znstrum Methods, 53 (2), 1967, 216228 (in French). 33 301. Eleetroreflectance by adsorption of gas on zinc oxide. (Germany) The formation of space charge layers by adsorbed oxygen or atomic hydrogen changes the reflectance of zinc oxide crystals. This phenomena can be explained by the theory of “electronreflectance”. The experimental vacuum system (lo-‘-- lo-* torr) is described, and the results obtained are discussed. B Hoffmann, Z Phys, 206 (3), 1967, 293-308 (in German). 33 302. Theory of single-component streams of similarly charged particles. (USSR) Differential equations are solved to derive expressions for the conditions of origin of the single-component mode of a threedimensional stream of non-relativistic similarly charged particles and for the electrostatic potential distribution in the stream. S N Ogorodnikov, Radiotekh Elektron, 12 (9), Sept 1967, 1616-1623 (in Russian). 33 303. Transmission, reflection and adsorption of electrons in solid body thin films. (USSR) The coefficients of transmission, reflection, and adsorption of 430 keV electrons in thin self-supporting films of aluminium, copper, gold, germanium, and silicon, with thickness 5oo-4o,OOOA, were measured at 10-O torr. A Ya Vyatskin and V V Trunev, Radiotekh Elektron, 12 (9), Sept 1967, 1636-1641 (in Russian). 33 304. Demagnetization cryostat for Miissbauer effect experiments.
(Japan) 33. GENERAL PHYSICS AND ELECTRONICS 33 : 17 Stimulation of ZnS phosphors by the far infrared. See abstract number 209. 33 : 30 X-ray diffraction by multilayered thin film structures and their diffusion. See abstract number 270. 33 :48 Variable temperature liquid helium cooled platform for metallographic studies of superconducting materials. See abstract number 352. 33 298. Low pressure spark chamber-high resolution spectrometer for 1 GeV protons. (Holland) A low pressure magnetic spectrometer for 1 GeV protons utilizing wire spark chambers operated at 0.1 atm is described. Details on the operating characteristics of the low pressure spark chambers are given and an outline of the pressure regulating system is included. (USA) R J Sutter et al, Nucl Znstrum Methods, 54 (l), 1967, 71-76. 33 299. Wide gap spark chamber tilled with neon and ethanol or water vapours. (Holland) Wide gap spark chambers 10 x 10 x 15 cm3, made entirely of glass with epoxy, were used, being pumped to 3 x IO-” torr and filled with (1) neon, (2) neon plus saturated ethanol vapour, and (3) neon plus saturated water vapour. Influence of ethanol and water vapour on dispersion and width of the tracks was studied for long time delays of high voltage pulses. (USSR) L P Kotenko et al, Nucl Znstrum Methods, 54 (l), 1967, 119-124. 33 300. On-line mass spectrometer for the study of short-lived isotopes. (Holland) A mass spectrometer is described which, used on-line with the extracted beam of an accelerator, allows the measurement of isotopic ratios of even the very short lived nuclides. The apparatus described, includes vacuum system, ion detection and counting equipment. It is a mobile type of installation and can be set in a few hours in the beam of an accelerator. The preparation of the target is the most delicate part of the technique, and examples are given of applications to various problems. The targets, heated to a temperature of about 15oo”C, are bombarded by a high energy proton beam and consists of a stack of metal and graphite slabs so that energetic recoils, originating
The construction of a cryostat for reaching 0.08-0.3”K liquid helium temperatures is described. Its operation and performance is discussed. M Shinohara et al, Japan J Appl Phys, 6 (8), 1967,982-990. 33 305. An infrared cell for studying adsorbed species at the gas-solid interface. (Great Britain) An infrared cell is described, which can be used at temperatures up to 500°C either under vacuum or in a controlled atmosphere. The cell is essentially a silica tube, having an outlet for vacuum or gas, another for a thermocouple, heater coil, water cooling and appropriate windows. C G A&stead et al, J Sci Znstrum, 44 (lo), 1967, 872-873. 33 306. Ion-bombardment level-crossing spectroscopy. (USA) The application of ion bombardment excitation to extend the range of excited states that can he studied by level-crossing spectroscopy, is reported. R D Kaul, J Opt Sot Amer, 57 (9), 1967, 1156-1157. 33 : 30 307. Exchange anisotropy in oxidized Pennalloy thin Alms at low temperatures. (USA) Oxidized Permalloy thin fdms exhibit uniaxial anisotropy at room temperatures, but at low temperatures develop a mixture of uniaxial and unidirectional anisotropies. Dependences on the thicknesses of the Permalloy and oxide layers are given to illustrate that these phenomena are related to the interfacial surface area. F B Hagedom, J Appl Phys, 38 (9), 1967, 3641-3645. 33 308. Effects of instabilities and scattering in electron beams in the absence of a magnetic field. (USA) The electron beams, focused by a space charge of 10 mm diameter at low voltage, in the absence of a magnetic field, undergo a rapid decrease in current. This decrease is a function of the axial distance from the gun. A positive oscillation source is formed and the electrons of the beam undergo a dispersion of the speed. M J Kofoid and P Zieske, Phys F&Is, 9 (ll), 1966, 2301-2303. 33 309. Wide-angle internal deflection structures of cathode-ray tubes. (USA) Studies were made to derive suitable forms of the focal length of a deflection system. Discussion led to the design of an electron gun, suitable for studies of dynamic correction of deflection defocusing 103