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Published June 1979 | Published
Journal Article Open

Reactor antineutrino spectra and their application to antineutrino-induced reactions

Abstract

The knowledge of reactor antineutrino spectra is necessary for the interpretation of weak-interaction experiments located at nuclear reactors. We calculate the antineutrino and electron spectra accompanying thermal neutron fission of 235U and 239Pu for various irradiation times. It is stressed that the higher energy part (E≳4 MeV) of the spectra depends sensitively on the β-decay characteristics of fission products with experimentally unknown decay schemes. We also discuss the accuracy of a semiempirical conversion of the electron spectrum into the antineutrino spectrum. The resulting ν̅ e spectra are used to calculated cross sections and reaction rates for the inverse neutron β decay, weak charged and neutral current induced deuteron disintegration, and the antineutrino-electron scattering.

Additional Information

© 1979 The American Physical Society. Received 13 December 1978. We would like to thank Dr. Charles Reich for his help in preparing the input data and for numerous valuable discussions. We also benefited from discussions with Professor F. Boehm, Professor W.A. Fowler, and Professor V. Telegdi. One of the authors, P.V., would like to acknowledge the hospitality of the Aspen Center of Physics. This work was supported by DOE Grant Nos. EY-76-C-03-0063 and EY-76-C-14-2170 and NSF Grant No. PHY 76-83685.

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August 22, 2023
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