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Atomnaya energiya Contents and abstracts of vol. 19, no. 3
Journal of Nuclear Energy Parts A/B,
1966, Vol. 20. pp. 437 CO440.
ATOMNA YA CONTENTS
AND
Pergamon Press
Ltd. Printed in Northern
Ireland
ENERGIYA
ABSTRACTS
OF VOL.
19, NO.
3*
PAPERS P. I. BLINOV and L. P. ZAKATOV: Divergent Collective Interactions of Electrons with the Plasma in the S-l Stellarator . . . . . . . . . . . . . B. V. CHIRIKOV: Stability of a Partially Compensated Electron Beam. . . . F. NASYROV,A. A. ROSTOVTSEV, Yu. I. IL’IN and S. V. LINEV: Distribution of Specific Ionization along a Track as a Function of Initial Energy for Fission Fragments from 235U . V. P. VERTEBNYI,M. F. VLASOV,A. L. KIRILYUK, V. V. KOLOTYI,ZH. I. PISANKOand N. A: TROFIMOVA:Total Neutron Cross Sections of ls5Re and '*'Re . . . K. MEYER: Neutron Spectra of Heterogeneous Media . . . . . . V. S. DANILIN,I. I. ZAKHAROV,A. A. LOGINOVand V. A. CHERNYAEV:Maximal Power and other Features of Diphenyl Turbines . . . . . . . . V. N. SMOLIN,V. K. POLYAKOV,V. I. ESIKOVand Yu. N. SHUINOV: Test Start-up Conditions of the Kurchatov Nuclear Power Station, Beloyarsk . . . . . . V. M. AZHAZHA,I. G. D’YAKOV,I. I. PAPIROVand G. F. TIKHINSKII: Changes in the Properties . . . . . . . . . . of Beryllium during Ageing YA. I. LAVRENTOVICH, A. 1. LEVON,G. N. MEL’NIKOVAand A. M. KABAKCHI: Coloured Poly. vinyl Alcohol Films as Neutron and y-Ray Dosimeters in Nuclear Reactors V. A. NEVSKIIand P. S. KOZLOVA: The Two Genetic Types of Post-Magmatic Thorium-Rare Earth Deposits . . . . . . . . . . . . . N. S. PROKOF’EV:Economics of Nuclear Radiation Applications in the Handling of Agricultural . . . . . . . . . . . . . . . Products
233 239 244 250 253 257 261 269 273 277 282
Abstracts of Deposited Articles B. A. SNEDKOV: Production of Monokinetic Electron Bunches with High Utilization in a . . . . . . . . . . Cavity Buncher L. M. SHIRKIN: Monte Carlo Calculation of the Neutron Transmission of Hydrogen . . LETTERS
287 288
TO THE EDITOR
V. I. DANILOV,I. B. ENCHEVICH,B. I. ZAMOLODCHIKOV, E. A. POLFEROV,E. I. ROZANOV,V. I. SMIRNOVand V. G. TESTOV: Increased Pulse Length at 680 MeV in the Joint Nuclear Research Institute Cyclotron . . . . . . . . . . Yu. YA. STAVISSKIIand L. E. SHERMAN: Diffusion of Neutrons in Uranium at Resonance Energies . . . . . . . . S. P. KAPCHIGASHEV:Radiative Capture Cross Sections in the Range 1 to 50,000 eV for’V, Zr; 9OZr, 9’Zr and 94Zr . . . . . . . SIX.KENZHEBAEV:The Heavy Monatomic Gas Model and the Transient-State Thermalization of Neutrons in Lead . . . . . . . . . YCJ. P. BETIN,M. I. BURSUKOVA,B. I. VERKHOVSKII and L. S. SHELKOV: Use of a T-Zr Source in X-Ray Spectral Analysis . . . . . . V. I. SUBBOTIN,P. L. KIRILLOV,F. A. KOZLOV,N. N. IVANOVSKIIandV. M. MAKAROV: Removal of Products from Reaction with Water in a Sodium Loop . . N. B. VARGAFTNIKand N. KH. ZIMINA: Thermal Conductivity of He at 0-1000°~ and’]-200
289 292 294 296 297 298
atm . . . . . . . . . . 300 L. N. ZAITSEV,P. A. LAVDANSKII,V. V. MAL’KOVand B. A. SYCHEV: Shielding Factors for Concretes . . . . . . . . . . . 303 A. A. ARKHANGEL’SKII and R. Yu. VOLKOVYSKII:Detection Limit in y-Ray Flaw Detection 30b Yu. I. BREGADZE: Effects of a Conducting Coating on the Homogeneity of an Ionization Chamber . . , . . . . . . . . 309 * Relevant papers and letters from this issue will be published in the Journal or in Plasma Physics (Journal of Nuclear Energy Part C).
(Parts A/B)
437
of Nuclear Energy
438
Abstracts and titles Atomnuya Energiya
I. A. BOCHVAR,I. B. KEIRIM-MARKUS,A. A. MOISEEV,T. I. ground External Doses for Populations in Towns of the . . . News of Science and Technology Bibliography. . . . . ABSTRACTS
PROSINAand V. V. YAKUBIK: BackU.S.S.R. . . . .
. .
.
. .
. .
. .
311 313 321
OF PAPERS
P. I. BLINOVand L. P. ZAKATOV: These interactions together with the associated emission of radiation.
are examined for the period of ohmic heating,
B. V. CHIRIKOV: The stability is considered in relation to loop formation; there is always a region of pronounced instability (rapid divergence) if the perturbation vectors have a continuous spectrum, but the instability appears only above certain beam currents if the spectrum is discrete (e.g. finite length of beam in the accelerator). Landau damping and radiative loss do not suppress the instability. There is a weak dissipative instability associated with the radiative loss, which may be accentuated or attenuated by the Landau damping. The study relates to a beam in the form of two loops (electron and ion) having constant dimensions and uniform density. F. NASYROVet al: A telescope of 11 pulse ionization chambers and a two-dimensional pulse-height analyser have been used to measure the specific loss for the fragments from 236Uin the energy ranges 78-1155 MeV (light) and 34-88 MeV (heavy). The two groups appear to differ somewhat. V. P. VERTEBNYI et al: Measurements have been made in the resonance, thermal and cold ranges on the VUR-M reactor (Institute of Physics, Academy of Sciences of the Ukrainian SSR). The l/v law is followed closely below @08 eV, but the positive levels of lssRe are responsible for only 56 % of the total cross section in the thermal region (only 3 % for l*‘Re). The near-zero negative level of lS7Re is found to have 5 I ].?,,I 5 10 eV, whereas lEOj > 10 eV for lssRe. K. MEYER: Transport theory is applied to a medium consisting of two non-absorbing components differing in temperature; the results are compared with those from Selenguta’s group model, in particular for the numerical results when the solutions are represented by closed expressions containing only tabulated functions. The error in the neutron temperature is then found to be 10% at maximum and to diminish as the components become more similar in temperature and moderating power. V. S. DANILIN ei al: The main features of the turbines are considered for reactor heating systems producing up to 50 MW; the maximal power is found to be governed by the possible expansion, not by material strength. A method is given for approximate calculations on these turbines at various rotor speeds; a low-speed two-stage turbine in a single housing is required to give adequate power in a single installation. The principal gas-dynamic features of diphenyl are discussed briefly. V. N. SMOLINet al: Hydrodynamic start-up methods.
stability tests are reported for the two reactors, with emphasis on
V. M. AZHAZHA ef al: The residual resistance and mechanical parameters are reported for cermet the plasticity and residual resistance are found to behave in beryllium aged at various temperatures; similar ways. Heat treatment of hot-pressed beryllium can give greatly improved plasticity, as can ageing of other types of beryllium. YA. I. LAVRENTOVICH et al: Films coloured with methylene blue are found to be suitable, the colour loss being linearly related to dose (104-lo6 rad) and very largely independent of linear energy transfer, dose rate, and temperature. Films containing boric acid in addition are suitable for thermal neutron fluxes of 1012-1014n/cm2. The maximal errors are *lo%. V. A. NEVSKII and P. S. KOZLOVA: The two types are described, one being related to surface foci and the other to deep ones. The first type shows a close relation to source magmatic rocks near the surface; it has a complex range of minerals and elements, with the ore distributed over a small vertical range. The second has no spatial relation to magmatic rocks and has a relatively simple mineral composition; the vertical range of the mineralization may be several hundred metres, and the ore type may be constant. N. S. PROKOF’EV: A graphical method is described for evaluation of isotope y-ray systems used with agricultural products, Examples illustrate the economics of particular applications, and suggestions are made as to the optimal parameters of the equipment.
Abstracts and titles Atomnaya Energiya
CONTENTS
AND ABSTRACTS
439
OF VOL. 19, NO. 4*
V. F. DEMICHEV,V. D. MATYUHIN,A. V. NIKOLOGORSKII and V. M. STRUNNIKOV:Deflexion of a Plasma Jet in a Magnetic Field . . . . . . . . . . . 329 YA. B. FAINBERGand V. D. SHAPIRO: Interaction of a Modulated Beam with a Plasma 336 V. A. BLINOV,V. N. DMI~IEV and M. I. KUZNETSOV:Use of y-y Coincidence Spectrometer with Summation of Pulse Amplitudes for Analysis of Mixtures of Radioactive Isotopes . . 342 1. V. SERGEEV:Use of the P,-Approximation for Determination of the Neutron Distribution in an Absorbing Rod . . . . . . . . . . . . . 346 V. D. GANZHA, A. I. EGOROV,D. M. KAMINKER,A. B. KOLYADIN,K. A. KONOPLEV,Yu. P. SAIKOVand V. T. SHAROV: An Electrophoretic Filter for Purifying Reactor Water . . 350 G. A. VASIL’EV,A. P. VESELKIN,Yu. A. EGOROV,G. G. MOISEEVand Yu. V. PANKRAT’EV: Attenuation of Reactor Radiations in Serpentinite Sand. . . . . . . 354 R. YA. KUCHEROVand V. P. MINENKO: Theory of Stages for Separating Isotopic Mixtures with Many Components . . . . . . . . . . . . 360 V. E. DROZDOV,I. M. ZAKHAROVAand S. P. DOBROVOL’SKII:Distribution of the Dose Rate from a ;J-Ray Irradiation Facility Containing Used Fuel Rods . . . . 367 F. P. BLJTR~,Z. V. EVKINA,0. L. FUFAEVA,I. A. KOROBEINIKOV and L. M. LEBEDEV:Effects of Temperature and Neutron Irradiation on the Plastic Deformation of Single Crystals of 372 cr-Uranium . . . . . . . . . . . . . Abstracts of Deposited Articles G. F. BOGDANOV,A. N. KARKHOVand Yu. A. KURCHERYAEV:Dissociation of Fast H,+ Ions and Charge Exchange of Fast Protons in a Lithium Arc . . . . . D. A. KOZHEVNIKOV: Age and Area of Neutron Migration from Polyenergetic Sources in . . . . . . . . . Organic and Metal-Hydrogen Moderators E. N. GORYANINA,K. K. POPKOV,S. M. RUBANOVand S. A. TSVE~OVA:Reduction of Capture :,-Rays and Associated Heat Production in a Reactor Vessel by Screening and by Boron Loading in the Thermal Shield . . . . . . . . . G. V. MUKHINA,A. N. PROTSENKO and N. M. TRUKIIACHEV:Calculation Method of Burn-Up in a Cylindrical Reactor with a Moving Shim System . . . . V. S. SHULEPIN: Choice of Boundary Conditions in the Spherical-Harmonics Meihod : : LETTERS
381 382
383 383 385
TO THE EDITOR
A. S. BAKAI: Particle Leakage from a Storage Ring Due to Random Variations in the Amplitude and Frequency of the Compensating Field . . . . . . . . M. I. KHEIFETSand V. D. SHAPIRO: Limitations on the Density of Interacting Currents in Colliding Ultra-Relativistic Beams. , . . . . . . . . I. P. BACHERIKOV:Xenon Oscillations in a Reactor . . . . . . . . F. A. KOZLOVand I. N. ANTONOV: Effects of Oxide Concentration on the Thermal Conductivity of Sodium . . . . . . . . . . . . N. F. ANDRYUSHINand B. P. BULATOV: Back-Scattering of y-Rays from Spherical Surfaces L. M. SHIRKIN: Angular Distribution of y-Rays Scattered in Lead and Water . . A. V. LARICHEV: Angular Distribution of >J-Rays Emitted by Point Source and Scattered in a Shield . . . . . . . . . . . . . . . V. V. GORYACHEV:Angular Distribution of Neutron Dose in the Atmosphere Near the Ground V. A. IONOV: Spectral Distribution of the ;J-Rays from a 6”Co Point Source Screened with Aluminium in the Atmosphere Near the Ground . . . . . . . A. A. KURASHOVand V. V. PARANONOV:A Light Pencil . . . . . . . V. M. MALYKHIN,A. A. MOISEEVand V. P. SHAMOV:Internal Radiation Dose from %r in Man News of Science and Technology . . . . . . . . . ABSTRACTS
386 388 389 391 392 394 395 396 397 400 401 404
OF PAPERS
V. F. DEMICHEVet al: The jet moves in the quadrupole field produced by four wires whose axis turns through 90” (radius of bend 30 cm) and which produce a maximal field strength of 6 kOe. The jet is produced by a coaxial gun and is injected along the axis of the system, which has been found to be effective with a jet of initial velocity 8 x lo6 cm/set and maximal concentration before deflexion 2 x 1015cm-3 (final velocity 7 x IO6 cm/set). The gaps in the system lead to a considerable loss, but the final concentration is 2 x 1Ol4cm-3 (total flux about 1017). The deflexion completely eliminates the neutral gas and gives an almost fully ionized plasma. The best field strength is about 3 kOe. * Relevant papers and letters from this issue will be published in the Journal of Nuclear Energy (Parts A/B) or in Plasma Physics (Journal of Nuclear Energy Part C).
440
Abstracts and titles Atomnaya Energiya
YA. B. FAINBERGand V. D. SHAPIRO: Excitation of longitudinal waves is considered for a modulated electron beam interacting with a plasma. The conditions for instability are derived, together with the spectrum and increments of the modes. V. A. BLINOVet al: Summation has been applied to y-7 coincidences in the selective detection of isotopes emitting y-ray cascades; the method gives precise results for isotopes emitting 3-4 % of the total y-ray flux from the mixture, including positon emitters. I. V. SERGEEV:The system of non-linear differential equations for the P, approximation to a system of integral equations, which may be solved by successive approximation.
is transformed
V. D. GANZHA et al: The water in the first circuit of the reactor at the Ioffe Institute of Technical Physics contains aluminium hydroxide produced by corrosion; this is completely removed by an electrophoretic filter of volume 10.7 1. This is of low hydraulic resistance and is simple to service; it handles 0.5 m3/hr and consumes 300 W. G. A. VASIL’EVet al: The serpentinite sand has an apparent density of 1.62 g/cm3 in the unconsolidated state; it contains about 11.5 ‘A of chemically bound water, which is released above 450°C. Measurements have been made on the fluxes of y-rays and fast and thermal neutrons, and also on the fast neutron spectrum. The relaxation lengths for fast neutrons are compared with those for boron carbide, serpentinite concrete and iron ore concentrate. R. YA. KUCHEROVand V. P. MINENKO: Steady-state separation is considered for a stage of any form for the limiting cases of infinitely slow and infinitely fast isotope exchange. The system of transport equations is solved for a rectangular-stepped stage, and a method of designing such stages is outlined. V. E. DROZDOVet al: The activity distribution for rods from the RFT reactor is found to be described by a cosine function; formulas for uniformly active rods are inapplicable to irradiation facilities containing these rods (dose-rate discrepancy 23 % for RFT and 32 % for the First Nuclear Power Station). Revised formulas give good agreement with experiment; these are for a single rod and for an irradiator consisting of 18 RFT rods in a cylinder. It is found that the activity can be treated as having a cosine distribution along an infinitely thin cylinder of radius equal to the arithmetic mean of the maximum and minimum radii. F. P. BUTRA et al: The plastic deformation has been examined as a function of temperature and crystallographic orientation; the curves are explained in terms of effects from the principal systems of plastic deformation. The crystals were irradiated at temperatures up to 100°C in fluxes of up to 55 x 1O1’n/cm2 (and one case of 4 x lO*O). Irradiation raises the critical shear stress in (010) planes by factors of 3-5; it reduces the strain and the range of easy slip. The mechanical characteristics are restored by annealing for fluxes up to 5.5 x 10” n/cm”. Note: A translation of any article not subsequently published can be obtained by addressing enquiries to the Custom Translation Service, Pergamon Press Ltd., Headington Hill Hall, Oxford, or Pergamon Press, Inc., 44-01 21st Street, Long Island City, N. Y. 11101.
1966, Vol. 20. pp. 437 CO440.
ATOMNA YA CONTENTS
AND
Pergamon Press
Ltd. Printed in Northern
Ireland
ENERGIYA
ABSTRACTS
OF VOL.
19, NO.
3*
PAPERS P. I. BLINOV and L. P. ZAKATOV: Divergent Collective Interactions of Electrons with the Plasma in the S-l Stellarator . . . . . . . . . . . . . B. V. CHIRIKOV: Stability of a Partially Compensated Electron Beam. . . . F. NASYROV,A. A. ROSTOVTSEV, Yu. I. IL’IN and S. V. LINEV: Distribution of Specific Ionization along a Track as a Function of Initial Energy for Fission Fragments from 235U . V. P. VERTEBNYI,M. F. VLASOV,A. L. KIRILYUK, V. V. KOLOTYI,ZH. I. PISANKOand N. A: TROFIMOVA:Total Neutron Cross Sections of ls5Re and '*'Re . . . K. MEYER: Neutron Spectra of Heterogeneous Media . . . . . . V. S. DANILIN,I. I. ZAKHAROV,A. A. LOGINOVand V. A. CHERNYAEV:Maximal Power and other Features of Diphenyl Turbines . . . . . . . . V. N. SMOLIN,V. K. POLYAKOV,V. I. ESIKOVand Yu. N. SHUINOV: Test Start-up Conditions of the Kurchatov Nuclear Power Station, Beloyarsk . . . . . . V. M. AZHAZHA,I. G. D’YAKOV,I. I. PAPIROVand G. F. TIKHINSKII: Changes in the Properties . . . . . . . . . . of Beryllium during Ageing YA. I. LAVRENTOVICH, A. 1. LEVON,G. N. MEL’NIKOVAand A. M. KABAKCHI: Coloured Poly. vinyl Alcohol Films as Neutron and y-Ray Dosimeters in Nuclear Reactors V. A. NEVSKIIand P. S. KOZLOVA: The Two Genetic Types of Post-Magmatic Thorium-Rare Earth Deposits . . . . . . . . . . . . . N. S. PROKOF’EV:Economics of Nuclear Radiation Applications in the Handling of Agricultural . . . . . . . . . . . . . . . Products
233 239 244 250 253 257 261 269 273 277 282
Abstracts of Deposited Articles B. A. SNEDKOV: Production of Monokinetic Electron Bunches with High Utilization in a . . . . . . . . . . Cavity Buncher L. M. SHIRKIN: Monte Carlo Calculation of the Neutron Transmission of Hydrogen . . LETTERS
287 288
TO THE EDITOR
V. I. DANILOV,I. B. ENCHEVICH,B. I. ZAMOLODCHIKOV, E. A. POLFEROV,E. I. ROZANOV,V. I. SMIRNOVand V. G. TESTOV: Increased Pulse Length at 680 MeV in the Joint Nuclear Research Institute Cyclotron . . . . . . . . . . Yu. YA. STAVISSKIIand L. E. SHERMAN: Diffusion of Neutrons in Uranium at Resonance Energies . . . . . . . . S. P. KAPCHIGASHEV:Radiative Capture Cross Sections in the Range 1 to 50,000 eV for’V, Zr; 9OZr, 9’Zr and 94Zr . . . . . . . SIX.KENZHEBAEV:The Heavy Monatomic Gas Model and the Transient-State Thermalization of Neutrons in Lead . . . . . . . . . YCJ. P. BETIN,M. I. BURSUKOVA,B. I. VERKHOVSKII and L. S. SHELKOV: Use of a T-Zr Source in X-Ray Spectral Analysis . . . . . . V. I. SUBBOTIN,P. L. KIRILLOV,F. A. KOZLOV,N. N. IVANOVSKIIandV. M. MAKAROV: Removal of Products from Reaction with Water in a Sodium Loop . . N. B. VARGAFTNIKand N. KH. ZIMINA: Thermal Conductivity of He at 0-1000°~ and’]-200
289 292 294 296 297 298
atm . . . . . . . . . . 300 L. N. ZAITSEV,P. A. LAVDANSKII,V. V. MAL’KOVand B. A. SYCHEV: Shielding Factors for Concretes . . . . . . . . . . . 303 A. A. ARKHANGEL’SKII and R. Yu. VOLKOVYSKII:Detection Limit in y-Ray Flaw Detection 30b Yu. I. BREGADZE: Effects of a Conducting Coating on the Homogeneity of an Ionization Chamber . . , . . . . . . . . 309 * Relevant papers and letters from this issue will be published in the Journal or in Plasma Physics (Journal of Nuclear Energy Part C).
(Parts A/B)
437
of Nuclear Energy
438
Abstracts and titles Atomnuya Energiya
I. A. BOCHVAR,I. B. KEIRIM-MARKUS,A. A. MOISEEV,T. I. ground External Doses for Populations in Towns of the . . . News of Science and Technology Bibliography. . . . . ABSTRACTS
PROSINAand V. V. YAKUBIK: BackU.S.S.R. . . . .
. .
.
. .
. .
. .
311 313 321
OF PAPERS
P. I. BLINOVand L. P. ZAKATOV: These interactions together with the associated emission of radiation.
are examined for the period of ohmic heating,
B. V. CHIRIKOV: The stability is considered in relation to loop formation; there is always a region of pronounced instability (rapid divergence) if the perturbation vectors have a continuous spectrum, but the instability appears only above certain beam currents if the spectrum is discrete (e.g. finite length of beam in the accelerator). Landau damping and radiative loss do not suppress the instability. There is a weak dissipative instability associated with the radiative loss, which may be accentuated or attenuated by the Landau damping. The study relates to a beam in the form of two loops (electron and ion) having constant dimensions and uniform density. F. NASYROVet al: A telescope of 11 pulse ionization chambers and a two-dimensional pulse-height analyser have been used to measure the specific loss for the fragments from 236Uin the energy ranges 78-1155 MeV (light) and 34-88 MeV (heavy). The two groups appear to differ somewhat. V. P. VERTEBNYI et al: Measurements have been made in the resonance, thermal and cold ranges on the VUR-M reactor (Institute of Physics, Academy of Sciences of the Ukrainian SSR). The l/v law is followed closely below @08 eV, but the positive levels of lssRe are responsible for only 56 % of the total cross section in the thermal region (only 3 % for l*‘Re). The near-zero negative level of lS7Re is found to have 5 I ].?,,I 5 10 eV, whereas lEOj > 10 eV for lssRe. K. MEYER: Transport theory is applied to a medium consisting of two non-absorbing components differing in temperature; the results are compared with those from Selenguta’s group model, in particular for the numerical results when the solutions are represented by closed expressions containing only tabulated functions. The error in the neutron temperature is then found to be 10% at maximum and to diminish as the components become more similar in temperature and moderating power. V. S. DANILIN ei al: The main features of the turbines are considered for reactor heating systems producing up to 50 MW; the maximal power is found to be governed by the possible expansion, not by material strength. A method is given for approximate calculations on these turbines at various rotor speeds; a low-speed two-stage turbine in a single housing is required to give adequate power in a single installation. The principal gas-dynamic features of diphenyl are discussed briefly. V. N. SMOLINet al: Hydrodynamic start-up methods.
stability tests are reported for the two reactors, with emphasis on
V. M. AZHAZHA ef al: The residual resistance and mechanical parameters are reported for cermet the plasticity and residual resistance are found to behave in beryllium aged at various temperatures; similar ways. Heat treatment of hot-pressed beryllium can give greatly improved plasticity, as can ageing of other types of beryllium. YA. I. LAVRENTOVICH et al: Films coloured with methylene blue are found to be suitable, the colour loss being linearly related to dose (104-lo6 rad) and very largely independent of linear energy transfer, dose rate, and temperature. Films containing boric acid in addition are suitable for thermal neutron fluxes of 1012-1014n/cm2. The maximal errors are *lo%. V. A. NEVSKII and P. S. KOZLOVA: The two types are described, one being related to surface foci and the other to deep ones. The first type shows a close relation to source magmatic rocks near the surface; it has a complex range of minerals and elements, with the ore distributed over a small vertical range. The second has no spatial relation to magmatic rocks and has a relatively simple mineral composition; the vertical range of the mineralization may be several hundred metres, and the ore type may be constant. N. S. PROKOF’EV: A graphical method is described for evaluation of isotope y-ray systems used with agricultural products, Examples illustrate the economics of particular applications, and suggestions are made as to the optimal parameters of the equipment.
Abstracts and titles Atomnaya Energiya
CONTENTS
AND ABSTRACTS
439
OF VOL. 19, NO. 4*
V. F. DEMICHEV,V. D. MATYUHIN,A. V. NIKOLOGORSKII and V. M. STRUNNIKOV:Deflexion of a Plasma Jet in a Magnetic Field . . . . . . . . . . . 329 YA. B. FAINBERGand V. D. SHAPIRO: Interaction of a Modulated Beam with a Plasma 336 V. A. BLINOV,V. N. DMI~IEV and M. I. KUZNETSOV:Use of y-y Coincidence Spectrometer with Summation of Pulse Amplitudes for Analysis of Mixtures of Radioactive Isotopes . . 342 1. V. SERGEEV:Use of the P,-Approximation for Determination of the Neutron Distribution in an Absorbing Rod . . . . . . . . . . . . . 346 V. D. GANZHA, A. I. EGOROV,D. M. KAMINKER,A. B. KOLYADIN,K. A. KONOPLEV,Yu. P. SAIKOVand V. T. SHAROV: An Electrophoretic Filter for Purifying Reactor Water . . 350 G. A. VASIL’EV,A. P. VESELKIN,Yu. A. EGOROV,G. G. MOISEEVand Yu. V. PANKRAT’EV: Attenuation of Reactor Radiations in Serpentinite Sand. . . . . . . 354 R. YA. KUCHEROVand V. P. MINENKO: Theory of Stages for Separating Isotopic Mixtures with Many Components . . . . . . . . . . . . 360 V. E. DROZDOV,I. M. ZAKHAROVAand S. P. DOBROVOL’SKII:Distribution of the Dose Rate from a ;J-Ray Irradiation Facility Containing Used Fuel Rods . . . . 367 F. P. BLJTR~,Z. V. EVKINA,0. L. FUFAEVA,I. A. KOROBEINIKOV and L. M. LEBEDEV:Effects of Temperature and Neutron Irradiation on the Plastic Deformation of Single Crystals of 372 cr-Uranium . . . . . . . . . . . . . Abstracts of Deposited Articles G. F. BOGDANOV,A. N. KARKHOVand Yu. A. KURCHERYAEV:Dissociation of Fast H,+ Ions and Charge Exchange of Fast Protons in a Lithium Arc . . . . . D. A. KOZHEVNIKOV: Age and Area of Neutron Migration from Polyenergetic Sources in . . . . . . . . . Organic and Metal-Hydrogen Moderators E. N. GORYANINA,K. K. POPKOV,S. M. RUBANOVand S. A. TSVE~OVA:Reduction of Capture :,-Rays and Associated Heat Production in a Reactor Vessel by Screening and by Boron Loading in the Thermal Shield . . . . . . . . . G. V. MUKHINA,A. N. PROTSENKO and N. M. TRUKIIACHEV:Calculation Method of Burn-Up in a Cylindrical Reactor with a Moving Shim System . . . . V. S. SHULEPIN: Choice of Boundary Conditions in the Spherical-Harmonics Meihod : : LETTERS
381 382
383 383 385
TO THE EDITOR
A. S. BAKAI: Particle Leakage from a Storage Ring Due to Random Variations in the Amplitude and Frequency of the Compensating Field . . . . . . . . M. I. KHEIFETSand V. D. SHAPIRO: Limitations on the Density of Interacting Currents in Colliding Ultra-Relativistic Beams. , . . . . . . . . I. P. BACHERIKOV:Xenon Oscillations in a Reactor . . . . . . . . F. A. KOZLOVand I. N. ANTONOV: Effects of Oxide Concentration on the Thermal Conductivity of Sodium . . . . . . . . . . . . N. F. ANDRYUSHINand B. P. BULATOV: Back-Scattering of y-Rays from Spherical Surfaces L. M. SHIRKIN: Angular Distribution of y-Rays Scattered in Lead and Water . . A. V. LARICHEV: Angular Distribution of >J-Rays Emitted by Point Source and Scattered in a Shield . . . . . . . . . . . . . . . V. V. GORYACHEV:Angular Distribution of Neutron Dose in the Atmosphere Near the Ground V. A. IONOV: Spectral Distribution of the ;J-Rays from a 6”Co Point Source Screened with Aluminium in the Atmosphere Near the Ground . . . . . . . A. A. KURASHOVand V. V. PARANONOV:A Light Pencil . . . . . . . V. M. MALYKHIN,A. A. MOISEEVand V. P. SHAMOV:Internal Radiation Dose from %r in Man News of Science and Technology . . . . . . . . . ABSTRACTS
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OF PAPERS
V. F. DEMICHEVet al: The jet moves in the quadrupole field produced by four wires whose axis turns through 90” (radius of bend 30 cm) and which produce a maximal field strength of 6 kOe. The jet is produced by a coaxial gun and is injected along the axis of the system, which has been found to be effective with a jet of initial velocity 8 x lo6 cm/set and maximal concentration before deflexion 2 x 1015cm-3 (final velocity 7 x IO6 cm/set). The gaps in the system lead to a considerable loss, but the final concentration is 2 x 1Ol4cm-3 (total flux about 1017). The deflexion completely eliminates the neutral gas and gives an almost fully ionized plasma. The best field strength is about 3 kOe. * Relevant papers and letters from this issue will be published in the Journal of Nuclear Energy (Parts A/B) or in Plasma Physics (Journal of Nuclear Energy Part C).
440
Abstracts and titles Atomnaya Energiya
YA. B. FAINBERGand V. D. SHAPIRO: Excitation of longitudinal waves is considered for a modulated electron beam interacting with a plasma. The conditions for instability are derived, together with the spectrum and increments of the modes. V. A. BLINOVet al: Summation has been applied to y-7 coincidences in the selective detection of isotopes emitting y-ray cascades; the method gives precise results for isotopes emitting 3-4 % of the total y-ray flux from the mixture, including positon emitters. I. V. SERGEEV:The system of non-linear differential equations for the P, approximation to a system of integral equations, which may be solved by successive approximation.
is transformed
V. D. GANZHA et al: The water in the first circuit of the reactor at the Ioffe Institute of Technical Physics contains aluminium hydroxide produced by corrosion; this is completely removed by an electrophoretic filter of volume 10.7 1. This is of low hydraulic resistance and is simple to service; it handles 0.5 m3/hr and consumes 300 W. G. A. VASIL’EVet al: The serpentinite sand has an apparent density of 1.62 g/cm3 in the unconsolidated state; it contains about 11.5 ‘A of chemically bound water, which is released above 450°C. Measurements have been made on the fluxes of y-rays and fast and thermal neutrons, and also on the fast neutron spectrum. The relaxation lengths for fast neutrons are compared with those for boron carbide, serpentinite concrete and iron ore concentrate. R. YA. KUCHEROVand V. P. MINENKO: Steady-state separation is considered for a stage of any form for the limiting cases of infinitely slow and infinitely fast isotope exchange. The system of transport equations is solved for a rectangular-stepped stage, and a method of designing such stages is outlined. V. E. DROZDOVet al: The activity distribution for rods from the RFT reactor is found to be described by a cosine function; formulas for uniformly active rods are inapplicable to irradiation facilities containing these rods (dose-rate discrepancy 23 % for RFT and 32 % for the First Nuclear Power Station). Revised formulas give good agreement with experiment; these are for a single rod and for an irradiator consisting of 18 RFT rods in a cylinder. It is found that the activity can be treated as having a cosine distribution along an infinitely thin cylinder of radius equal to the arithmetic mean of the maximum and minimum radii. F. P. BUTRA et al: The plastic deformation has been examined as a function of temperature and crystallographic orientation; the curves are explained in terms of effects from the principal systems of plastic deformation. The crystals were irradiated at temperatures up to 100°C in fluxes of up to 55 x 1O1’n/cm2 (and one case of 4 x lO*O). Irradiation raises the critical shear stress in (010) planes by factors of 3-5; it reduces the strain and the range of easy slip. The mechanical characteristics are restored by annealing for fluxes up to 5.5 x 10” n/cm”. Note: A translation of any article not subsequently published can be obtained by addressing enquiries to the Custom Translation Service, Pergamon Press Ltd., Headington Hill Hall, Oxford, or Pergamon Press, Inc., 44-01 21st Street, Long Island City, N. Y. 11101.