Total Absorption Spectroscopy Study of Rb-92 Decay: A Major Contributor to Reactor Antineutrino Spectrum Shape
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Total Absorption Spectroscopy Study of Rb-92 Decay: A Major Contributor to Reactor Antineutrino Spectrum Shape

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Total Absorption Spectroscopy Study of Rb-92 Decay: A Major Contributor to Reactor Antineutrino Spectrum Shape

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Algora, Alejandro; Taín Enríquez, José Luis; Valencia, Ebhelixes; Agramunt Ros, Jorge; Estévez Aguado, María Esther; Gelletly, W.; Jordán Martín, María Dolores; Molina Palacios, Francisco Gabriel; Pérez Cerdán, Ana Belén; Rubio Barroso, Berta
This document is a artículoDate2015

Este documento está disponible también en : http://hdl.handle.net/10550/53371
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.

    Algora, Alejandro Taín Enríquez, José Luis Valencia, Ebhelixes Agramunt Ros, Jorge Estévez Aguado, María Esther Gelletly, W. Jordán Martín, María Dolores Molina Palacios, Francisco Gabriel Pérez Cerdán, Ana Belén Rubio Barroso, Berta 2015 Total Absorption Spectroscopy Study of Rb-92 Decay: A Major Contributor to Reactor Antineutrino Spectrum Shape Physical Review Letters 115 10 102503
http://dx.doi.org/10.1103/PhysRevLett.115.102503

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