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Title: Pseudomagnetic effects for resonance neutrons

Authors:
;
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1349703
Grant/Contract Number:
SC0015882
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 95; Journal Issue: 4; Related Information: CHORUS Timestamp: 2017-04-03 22:15:08; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English

Citation Formats

Gudkov, Vladimir, and Shimizu, Hirohiko M. Pseudomagnetic effects for resonance neutrons. United States: N. p., 2017. Web. doi:10.1103/PhysRevC.95.045501.
Gudkov, Vladimir, & Shimizu, Hirohiko M. Pseudomagnetic effects for resonance neutrons. United States. doi:10.1103/PhysRevC.95.045501.
Gudkov, Vladimir, and Shimizu, Hirohiko M. Mon . "Pseudomagnetic effects for resonance neutrons". United States. doi:10.1103/PhysRevC.95.045501.
@article{osti_1349703,
title = {Pseudomagnetic effects for resonance neutrons},
author = {Gudkov, Vladimir and Shimizu, Hirohiko M.},
abstractNote = {},
doi = {10.1103/PhysRevC.95.045501},
journal = {Physical Review C},
number = 4,
volume = 95,
place = {United States},
year = {Mon Apr 03 00:00:00 EDT 2017},
month = {Mon Apr 03 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1103/PhysRevC.95.045501

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  • The current status of experimental investigations of P-odd and various P-even interference effects in the angular distributions of fragments of heavy-nucleus fission induced by slow neutrons is discussed. Special attention is paid to the discussion of experimental results concerning effects of the violation of space parity in {sup 229}Th, {sup 241}Pu, and {sup 241}Am fission induced by cold polarized neutrons and to the analysis of the energy dependence of P-odd and P-even effects in the angular distributions of fragments of {sup 233,235}U and {sup 239}Pu fission induced by slow neutrons. 22 refs., 6 figs., 1 tab.
  • The effects of boric acid admixture on the intensity and line structure of EPR spectra of free radicals produced in alanine by thermal neutrons are presented. The EPR signal enhancement, up to a factor of 40 depending on the boron concentration, is related to additional energy deposition in alanine crystals by the disintegration products resulting from the capture of a thermal neutron by boron, {sup 10}B(n,{alpha}){sup 7}Li. The changes in the shape of the EPR spectra observed by changing the microwave power are due to the differences in the microwave power saturation of the free radicals produced by a low-LETmore » radiation and those produced by the high-LET components of the radiation after the neutron capture reaction. 27 refs., 4 figs., 2 tabs.« less
  • Investigations of the space parity nonconserving (PNC) asymmetry of 233U, 235U, and 239Pu fission fragment emission and parity conserving (PC) interference effects of left-right and forward-backward asymmetries were carried out on the neutron beams of the reactor IBR-30 (JINR, Dubna) over the range of neutron energies from 0.02 eV to about 100 eV. All experimental results obtained have been found to be in a good mutual accordance within the frames of modern theoretical conceptions about the mechanisms of PNC and PC effects forming in fission process induced by slow neutrons. In case of the P-even interference effects of asymmetry themore » evident mutual well-marked irregularities in their neutron energy dependencies up to about 100 eV were observed. It is connected with the interference of s, p-resonances at fission compound stage according to modern theory. As a remarkable result of the PNC effect measurements the resonance behavior of the PNC asymmetry coefficients in the low neutron energy region (En < 2 eV) was observed. Unfortunately, the statistical accuracy of the PNC effect measurements is not enough for observation of these resonance effects in other cases of more high energies. Results of simultaneous analysis of all three asymmetry effects for all three nuclei are presented. The satisfactory combined description of the experimental points is received. As a result of theoretical evaluation of these data main parameters and the estimates of nuclear matrix elements of the weak interaction for some p-resonances in the low energy range were extracted.« less