Tagging long-lived radioactive isotopes produced through cosmic-ray muon spallation in KamLAND

Weerman, K. M. (2024) Tagging long-lived radioactive isotopes produced through cosmic-ray muon spallation in KamLAND. Il nuovo cimento C, 47 (6). pp. 1-4. ISSN 1826-9885

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Abstract

The most stringent limit on the neutrinoless double beta decay half-life of 136Xe is set by KamLAND-Zen at T1/2 > 2.3 × 1026yr. The experiment’s sensitivity is limited by long-lived radioactive isotopes produced from muon spallation of xenon nuclei in the xenon-doped liquid scintillator. The long lifetimes of the isotopes, typically up to several days, challenge the creation of an efficient tagging method, currently achieving only 42 ± 8.8%. We summarise the tagging techniques for both light and heavy spallation isotopes employed in KamLAND-Zen, and high-light the critical role of FLUKA simulations in developing new veto strategies.

Item Type: Article
Subjects: 500 Scienze naturali e Matematica > 530 Fisica
Depositing User: Marina Spanti
Date Deposited: 27 Feb 2025 11:05
Last Modified: 27 Feb 2025 11:05
URI: http://eprints.bice.rm.cnr.it/id/eprint/23428

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