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- Title
Development of Zr-loaded Green-emitting Liquid Scintillator for Detection of Neutrinoless Double Beta Decay.
- Authors
Akito Watanabe; Arisa Magi; Masanori Koshimizu; Atsushi Sato; Yutaka Fujimoto; Keisuke Asai
- Abstract
In this study, zirconium acetylacetonate (Zr(acac)4) containing the isotope 96Zr was studied as a liquid scintillator for the possible detection of neutrinoless double beta decay. To avoid the absorption of scintillation by ligand absorption, the phosphor Coumarin 7 was assessed as a green-emitting liquid scintillator. By dissolving 3 g/L of Coumarin 7 in anisole, a liquid scintillator with a light yield of 12000 photons/MeV was fabricated. Subsequently, the liquid scintillator was loaded with Zr(acac)4. In the liquid scintillator containing 10 wt% Zr(acac)4, the light yield of scintillation was 370 photons/MeV for a blue-emitting liquid scintillator, while a light yield of 1900 photons/MeV was determined for a green-emitting liquid scintillator. The scintillation decay time constants of the fast component were around 4.4 ns. Liquid scintillators with a high light yield that avoid absorption by Zr(acac)4 can be prepared using Coumarin 7.
- Subjects
SCINTILLATORS; NEUTRINOLESS double beta decay; LIQUID scintillators; DECAY constants
- Publication
Sensors & Materials, 2021, Vol 33, Issue 6, Part 4, p2251
- ISSN
0914-4935
- Publication type
Article
- DOI
10.18494/SAM.2021.3411