Publication:
Reevaluating reactor antineutrino spectra with new measurements of the ratio between U- 235 and Pu- 239 beta spectra

Дата
2021
Авторы
Kopeikin, V.
Skorokhvatov, M.
Titov, O.
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Научные группы
Организационные подразделения
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Организационная единица
Институт ядерной физики и технологий
Цель ИЯФиТ и стратегия развития - создание и развитие научно-образовательного центра мирового уровня в области ядерной физики и технологий, радиационного материаловедения, физики элементарных частиц, астрофизики и космофизики.
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Аннотация
We report a reanalysis of the reactor antineutrino energy spectra based on the new relative measurements of the ratio R =S-e(5)/S-e(9) between cumulative beta spectra from U-235 and Pu-239, performed at a research reactor in National Research Centre Kurchatov Institute (KI). A discrepancy with the beta spectra measured at Institut Laue-Langevin (ILL) was observed, indicating a steady excess of the ILL ratio by the factor of 1.054 +/- 0.002. We find a value of the ratio between inverse beta decay cross section per fission for U-235 and (PU)-P-239: ((5)sigma(f)/(9)sigma(f))(KI)( )= 1.45 +/- 0.03, and then we reevaluate the converted antineutrino spectra for U-235 and U-238. We conclude that the new predictions are consistent with the results of Daya Bay and STEREO experiments.
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Reevaluating reactor antineutrino spectra with new measurements of the ratio between U- 235 and Pu- 239 beta spectra / Kopeikin, V, Skorokhvatov, M, Titov, O // Physical Review D. - 2021. - 104. - № 8. - 10.1103/PhysRevD.104.L071301
URI
https://www.doi.org/10.1103/PhysRevD.104.L071301
 https://www.scopus.com/record/display.uri?eid=2-s2.0-85119403345&origin=resultslist
 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000753728900005
 https://openrepository.mephi.ru/handle/123456789/24865
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