6533b7d9fe1ef96bd126beb3
RESEARCH PRODUCT
Total Absorption Spectroscopy Study of Rb-92 Decay: A Major Contributor to Reactor Antineutrino Spectrum Shape
Alejandro AlgoraJosé Luis Taín EnríquezEbhelixes ValenciaJorge Agramunt RosMaría Esther Estévez AguadoW. GelletlyMaría Dolores Jordán MartínFrancisco Gabriel Molina PalaciosAna Belén Pérez CerdánBerta Rubio Barrososubject
Físicadescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-01-01 |