Scintillation balloon for neutrinoless double-beta decay search with liquid scintillator detectors

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2 Citations (Scopus)

Abstract

Environmental radioactivity is a dominant background for rare decay search experiments, and it is difficult to completely remove such an impurity from detector vessels. We propose a scintillation balloon as the active vessel of a liquid scintillator in order to identify this undesirable radioactivity. According to our feasibility studies, the scintillation balloon enables the bismuth-polonium sequential decay to be tagged with a 99.7% efficiency, assuming a KamLAND-Type (KamLAND = Kamioka Liquid scintillator AntiNeutrino Detector) liquid scintillator detector. This tagging of sequential decay using alpha rays from the polonium improves the sensitivity to neutrinoless double-beta decay while rejecting beta ray background from the bismuth.

Original languageEnglish
Article number073H01
JournalProgress of Theoretical and Experimental Physics
Volume2019
Issue number7
DOIs
Publication statusPublished - 2019 Jul 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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