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Search for Double-Beta Decay of 82Se into 82Kr Excited States Using the OBELIX Installation

Authors: Barabash, A.S; Warot, G; Nagorny, S; Pagnanini, L; Pirro, S; Ponomarev, D.V; Rozov, S.V; +6 Authors

Search for Double-Beta Decay of 82Se into 82Kr Excited States Using the OBELIX Installation

Abstract

A search for the processes of double beta decay of $^{82}$Se into excited states of $^{82}$Kr is conducted using the OBELIX setup. The measurements are conducted using a 600 cm$^{3}$ HPGe detector. The detector is surrounded by 6.5 kg of enriched selenium (the content of $^{82}$Se was ~92.5%). The data collected over 17 572.2 h of measurements are given. As a result, a world-record sensitivity is reached for transitions of this type. Specifically, we have found an indication of the existence of two-neutrino $^{82}$Se decay into the first 0$^{+}^{82}$Kr excited state with a half-life of $4.4_{{ - 0.9}}^{{ + 1.6}}$ × 10$^{22}$ years.

Keywords

[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex]

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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