6533b7d8fe1ef96bd1269ae0
RESEARCH PRODUCT
Total Absorption Spectroscopy Study of $^{92}$Rb Decay: A Major Contributor to Reactor Antineutrino Spectrum Shape
A. -A. Zakari-issoufouM. FallotA. PortaA. AlgoraJ. L. TainE. ValenciaS. RiceV. M BuiS. CormonM. EstienneJ. AgramuntJ. ��Yst��M. BowryJ. A. BrizR. Caballero-folchD. Cano-ottA. CucoanesV. -V. ElomaaT. EronenE. Est��vezG. F. FarrellyA. R. GarciaW. GelletlyM. B Gomez-hornillosV. GorlychevJ. HakalaA. JokinenM. D. JordanA. KankainenP. KarvonenV. S. KolhinenF. G KondevT. MartinezE. MendozaF. MolinaI. MooreA. B. Perez-cerd��nZs. Podoly��kH. Penttil��P. H. ReganM. ReponenJ. RissanenB. RubioT. ShibaA. A. SonzogniC. WeberIgisol Collaborationsubject
High Energy Physics - Experiment (hep-ex)FOS: Physical sciencesNuclear Experiment (nucl-ex)Nuclear ExperimentHigh Energy Physics - Experimentdescription
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. $^{92}$Rb makes the dominant contribution to the reactor spectrum in the 5-8 MeV range but its decay properties are in question. We have studied $^{92}$Rb 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 |
|---|---|---|---|---|
| 2015-04-22 |