Logo image
Measurement of the Spectral Shape of the beta-Decay of Xe-137 to the Ground State of Cs-137 in EXO-200 and Comparison with Theory
Journal article   Open access   Peer reviewed

Measurement of the Spectral Shape of the beta-Decay of Xe-137 to the Ground State of Cs-137 in EXO-200 and Comparison with Theory

S. Al Kharusi, G. Anton, Badhrees, P. S. Barbeau, D. Beck, Belov, T. Bhatta, M. Breidenbach, T. Brunner, G. F. Cao, …
Physical review letters, v 124(23)
12 Jun 2020
PMID: 32603173
url
https://doi.org/10.1103/physrevlett.124.232502View
Published, Version of Record (VoR)CC0 V1.0 Open
url
https://doi.org/10.1103/PhysRevLett.124.232502View
Published, Version of Record (VoR) Open

Abstract

Physical Sciences Physics Physics, Multidisciplinary Science & Technology
We report on a comparison between the theoretically predicted and experimentally measured spectra of the first-forbidden nonunique beta-decay transition Xe-137(7/2(-)) -> Cs-137(7/2(+)). The experimental data were acquired by the EXO-200 experiment during a deployment of an AmBe neutron source. The ultralow background environment of EXO-200, together with dedicated source deployment and analysis procedures, allowed for collection of a pure sample of the decays, with an estimated signal to background ratio of more than 99 to 1 in the energy range from 1075 to 4175 keV. In addition to providing a rare and accurate measurement of the first-forbidden nonunique beta-decay shape, this work constitutes a novel test of the calculated electron spectral shapes in the context of the reactor antineutrino anomaly and spectral bump.

Metrics

4 Record Views
7 citations in Scopus

Details

InCites Highlights

Data related to this publication, from InCites Benchmarking & Analytics tool:

Collaboration types
Domestic collaboration
International collaboration
Web of Science research areas
Physics, Multidisciplinary
Logo image