Title:
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Total absorption spectroscopy study of Rb-92 decay: a major contributor to reactor antineutrino spectrum shape
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Author:
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Zakari-Issoufou, A.-A.; Fallot, M.; Porta, A.; Caballero Folch, Roger; Gómez Hornillos, María Belén; Gorlychev, V.
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Other authors:
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Universitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group |
Abstract:
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The antineutrino spectra measured in recent experiments at reactors are inconsistent with calculations based on the conversion of integral beta spectra recorded at the ILL reactor. Rb-92 makes the dominant contribution to the reactor antineutrino spectrum in the 5-8 MeV range but its decay properties are in question. We have studied Rb-92 decay with total absorption spectroscopy. Previously unobserved beta feeding was seen in the 4.5-5.5 region and the GS to GS feeding was found to be 87.5(25)%. The impact on the reactor antineutrino spectra calculated with the summation method is shown and discussed. |
Abstract:
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The antineutrino spectra measured in recent experiments at reactors are inconsistent with calculations based on the conversion of integral beta spectra recorded at the ILL reactor. Rb-92 makes the dominant contribution to the reactor antineutrino spectrum in the 5-8 MeV range but its decay properties are in question. We have studied Rb-92 decay with total absorption spectroscopy. Previously unobserved beta feeding was seen in the 4.5-5.5 region and the GS to GS feeding was found to be 87.5(25)%. The impact on the reactor antineutrino spectra calculated with the summation method is shown and discussed. |
Abstract:
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Peer Reviewed |
Subject(s):
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-Àrees temàtiques de la UPC::Física -Physics -Beta-decay -Fission-products -Penning Trap -Spectometer -Física -Física |
Rights:
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http://creativecommons.org/licenses/by/3.0/es/ |
Document type:
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Article - Published version Article |
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