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Spectrum of the bremsstrahlung produced by electrons of energy 260 MeV
Abstracts and titles of future papers
332
Apparatus spectra for the gamma-rays from unbounded layers of uranium ore: S. G. TROITSKII, V. L. SHASHKIN and K. I. BYKOVA. Separate determination of uranium and thorium from the y-ray spectra emitted by ores in the field. S. G. TROITSKII,V. L. SHASHKIN and K. I. BYKOVA. News of Science and Technology Bibliography
Vol. 12, No. 2 The International Conference on Plasma Physics and Controlled Thermonuclear Reactions: E. I. KUZNETSOVand E. P. BELIKHOV. The conference was held from 4-9 September 1961 in Salzburg, Austria; it was organized by the International Atomic Energy Authority. There were 508 delegates present who were drawn from six international organizations and from 29 countries. Of the 250 papers presented, 111 were read at the meetings; there were also surveys by Artsimovich (USSR) and Rosenblum (USA). The papers read and the discussions will be published in full in the journal Nuclear Synthesis. A brief survey of the results of the conference is given here.
shield. Good agreement is obtained for the seven-group method (in which the high-energy groups are specified empirically) and for the ten-group method. The calculations and measurements are reported. Interaction of a fatty-acid collector with uraninite during flotation: L. A. GREKULOVA. Experimental results are presented for the effects of a fatty-acid collector on the flotation of uraninite. The kinetics of the process are considered, and empirical laws are demonstrated for the relation between the state of the surface and the amount of Results are given for the electrokinetic adsorbed collector. parameters of the surface. These results are compared with flotation tests on mono-mineralic and bimineralic cases. Letters to the Editor The linear electron accelerator: G. I. ZHILEIKO. Comparison of the kinetic energies of the fission fragments produced from 2W by neutrons of energies 3 and 15 MeV: I. A. BARANOV,A. N. PROTOPOVand V. P. EISMONT. New measurements of the ages of neutrons from the fission of 235U in hydrogeneous media: L. N. YUROVA, A. A. POLYAKOVand A. A. IGNATOV.
Use of semiconductor spectrometric counters to measure the energies of fission fragments: N. M. KAZARINOV,0. A. MATEEV, Use of autocorrelation for the magnetic field in a cyclic accelerator S. M. RYVKIN, S. M. SOLOV’EV,N. B. STROKANand D. V. designed to produce very high energies: E. L. BURSHTEIN,A. A. VASIL’EV,A. L. MINTS, V. A. PETUKHOVand S. M. RUBCHINSKII. TARKHIN. Effects of a resonance absorber on the absorption of slow neutrons Automatic control of the field with respect to the positiop of the by a nuclide with a smoothly varying cross section: T. V. beam is discussed. Special perturbing pulses are used in order to GOLASHVILI. measure the frequency of the betatron oscillations. The field deviation is determined from the position of the orbit. Methods Criticality tests on a design of heavy-water reactor with fuel are discussed for ensuring that the first circuit is completed elements of rod type: Yu. G. ABOV, V. F. BELKIN and P. A. before the field is corrected. Outline parameters are given for KRUPCHIT~KII. accelerators designed to produce 300 to 1000 GeV. The GUPOS 137Cs-800 transportable y-ray equipment for Energy spectrum of the fast neutrons and distribution of the irradiating seeds before sowing: A. V. BIBERGAL’, K. N. EMEL’YANOV,M. M. KOROTKOV,N. I. LEIPUNSKIIand T. G. thermal-neutron flux in the experimental column of the VVR reactor: N. V. ZVONOV,A. I. MIS’KEVICH,I. V. ROGOZHKIN, RATNER. News of Science and Technology V. I. TERESHCHENKO, ZH. I. TURKOVand V. P. UTKIN. The energy distribution in a vertical channel that passes very close to the core has been examined by means of threshold detectors (Al, In, Fe, Ti, Zn, Si, Mg, 01, Hg and S). The fastneutron spectrum is presented for the level opposite the middle of the core; the distribution of the thermal-neutron flux in the channel is also given. In all cases except those of S and Cu, the activity of the detector was determined from the y-ray emission. The results are compared with those from theoretical calculations. Conditions for using the transfer functions of a reactor: P. KOVANIE. The equivalent complex gain of a reactor can be determined not only for a given law for the input, but also for a given law for the output. The results can be used in order to vary the period and power output; they can also be used to determine the conditions governing the use of elementary transfer functions and to ascertain the errors associated with the use of such functions. New formulas are given for approximating the transfer functions of subcritical, critical and supercritical reactors.
Bibliography
Vol. 12, No. 3 Spectrum of the bremsstrahlung produced by electrons of energy 260 MeV: Yu. M. ADO, K. A. BELOVINTSEV and S. N. STOLYAROV. Measurements have been made of the X-ray spectrum produced by electrons of energy 260 MeV; a 15-channel y-ray pair spectrometer was used. The observed distribution differs greatly from Schiff’s near the maximum energy. Repeated emission is found to be important if the target is thicker than 0.1 W radiation unit. Energy-stabilization circuit for a synchrotron: reference voltage: 0. V. BOGDANKEVICH.
use of a variable
A description is given of a relative method of measuring the yields of photonuclear reactions; a multichannel analyser is used in order to eliminate the effects of drift in the sensitivity of the detector.
Use of multigroup methods to compute a biological shield: D. L. Spatial distribution of the repeatedly scattered y-rays from BRODER,A. P. KONDRASHOV,A. A. KUTUZOV,V. A. NAUMOV, collimated sources of 1s8Au, Wo and 24Na: V. I. KUKHTEVICH Yu. A. SERGEEVand A. V. TURUSOV. and B. P. SHEMETENKO. Descriptions are given of seven-group and ten-group methods Collimated sources contain&g ‘OaAu, ‘Wo and 24Na have been applicable to the calculation of the biological shield of a nuclear used in dose distribution measurements on repeatedly scattered reactor. The computed spatial and energy distributions for the y-rays in water of unlimited extent. ,Attenuation curves for neutrons have been tested by experiment for several types of water are given for y-ray energies of 2.76, 2.07, 1.25 and 0.411
332
Apparatus spectra for the gamma-rays from unbounded layers of uranium ore: S. G. TROITSKII, V. L. SHASHKIN and K. I. BYKOVA. Separate determination of uranium and thorium from the y-ray spectra emitted by ores in the field. S. G. TROITSKII,V. L. SHASHKIN and K. I. BYKOVA. News of Science and Technology Bibliography
Vol. 12, No. 2 The International Conference on Plasma Physics and Controlled Thermonuclear Reactions: E. I. KUZNETSOVand E. P. BELIKHOV. The conference was held from 4-9 September 1961 in Salzburg, Austria; it was organized by the International Atomic Energy Authority. There were 508 delegates present who were drawn from six international organizations and from 29 countries. Of the 250 papers presented, 111 were read at the meetings; there were also surveys by Artsimovich (USSR) and Rosenblum (USA). The papers read and the discussions will be published in full in the journal Nuclear Synthesis. A brief survey of the results of the conference is given here.
shield. Good agreement is obtained for the seven-group method (in which the high-energy groups are specified empirically) and for the ten-group method. The calculations and measurements are reported. Interaction of a fatty-acid collector with uraninite during flotation: L. A. GREKULOVA. Experimental results are presented for the effects of a fatty-acid collector on the flotation of uraninite. The kinetics of the process are considered, and empirical laws are demonstrated for the relation between the state of the surface and the amount of Results are given for the electrokinetic adsorbed collector. parameters of the surface. These results are compared with flotation tests on mono-mineralic and bimineralic cases. Letters to the Editor The linear electron accelerator: G. I. ZHILEIKO. Comparison of the kinetic energies of the fission fragments produced from 2W by neutrons of energies 3 and 15 MeV: I. A. BARANOV,A. N. PROTOPOVand V. P. EISMONT. New measurements of the ages of neutrons from the fission of 235U in hydrogeneous media: L. N. YUROVA, A. A. POLYAKOVand A. A. IGNATOV.
Use of semiconductor spectrometric counters to measure the energies of fission fragments: N. M. KAZARINOV,0. A. MATEEV, Use of autocorrelation for the magnetic field in a cyclic accelerator S. M. RYVKIN, S. M. SOLOV’EV,N. B. STROKANand D. V. designed to produce very high energies: E. L. BURSHTEIN,A. A. VASIL’EV,A. L. MINTS, V. A. PETUKHOVand S. M. RUBCHINSKII. TARKHIN. Effects of a resonance absorber on the absorption of slow neutrons Automatic control of the field with respect to the positiop of the by a nuclide with a smoothly varying cross section: T. V. beam is discussed. Special perturbing pulses are used in order to GOLASHVILI. measure the frequency of the betatron oscillations. The field deviation is determined from the position of the orbit. Methods Criticality tests on a design of heavy-water reactor with fuel are discussed for ensuring that the first circuit is completed elements of rod type: Yu. G. ABOV, V. F. BELKIN and P. A. before the field is corrected. Outline parameters are given for KRUPCHIT~KII. accelerators designed to produce 300 to 1000 GeV. The GUPOS 137Cs-800 transportable y-ray equipment for Energy spectrum of the fast neutrons and distribution of the irradiating seeds before sowing: A. V. BIBERGAL’, K. N. EMEL’YANOV,M. M. KOROTKOV,N. I. LEIPUNSKIIand T. G. thermal-neutron flux in the experimental column of the VVR reactor: N. V. ZVONOV,A. I. MIS’KEVICH,I. V. ROGOZHKIN, RATNER. News of Science and Technology V. I. TERESHCHENKO, ZH. I. TURKOVand V. P. UTKIN. The energy distribution in a vertical channel that passes very close to the core has been examined by means of threshold detectors (Al, In, Fe, Ti, Zn, Si, Mg, 01, Hg and S). The fastneutron spectrum is presented for the level opposite the middle of the core; the distribution of the thermal-neutron flux in the channel is also given. In all cases except those of S and Cu, the activity of the detector was determined from the y-ray emission. The results are compared with those from theoretical calculations. Conditions for using the transfer functions of a reactor: P. KOVANIE. The equivalent complex gain of a reactor can be determined not only for a given law for the input, but also for a given law for the output. The results can be used in order to vary the period and power output; they can also be used to determine the conditions governing the use of elementary transfer functions and to ascertain the errors associated with the use of such functions. New formulas are given for approximating the transfer functions of subcritical, critical and supercritical reactors.
Bibliography
Vol. 12, No. 3 Spectrum of the bremsstrahlung produced by electrons of energy 260 MeV: Yu. M. ADO, K. A. BELOVINTSEV and S. N. STOLYAROV. Measurements have been made of the X-ray spectrum produced by electrons of energy 260 MeV; a 15-channel y-ray pair spectrometer was used. The observed distribution differs greatly from Schiff’s near the maximum energy. Repeated emission is found to be important if the target is thicker than 0.1 W radiation unit. Energy-stabilization circuit for a synchrotron: reference voltage: 0. V. BOGDANKEVICH.
use of a variable
A description is given of a relative method of measuring the yields of photonuclear reactions; a multichannel analyser is used in order to eliminate the effects of drift in the sensitivity of the detector.
Use of multigroup methods to compute a biological shield: D. L. Spatial distribution of the repeatedly scattered y-rays from BRODER,A. P. KONDRASHOV,A. A. KUTUZOV,V. A. NAUMOV, collimated sources of 1s8Au, Wo and 24Na: V. I. KUKHTEVICH Yu. A. SERGEEVand A. V. TURUSOV. and B. P. SHEMETENKO. Descriptions are given of seven-group and ten-group methods Collimated sources contain&g ‘OaAu, ‘Wo and 24Na have been applicable to the calculation of the biological shield of a nuclear used in dose distribution measurements on repeatedly scattered reactor. The computed spatial and energy distributions for the y-rays in water of unlimited extent. ,Attenuation curves for neutrons have been tested by experiment for several types of water are given for y-ray energies of 2.76, 2.07, 1.25 and 0.411