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Son, Jukyung
지하실험 연구단
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Growth and development of pure Li2MoO4 crystals for rare event experiment at CUP

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Title
Growth and development of pure Li2MoO4 crystals for rare event experiment at CUP
Author(s)
Jukyung Son; JunSeok Choe; Olga Gileva; Insik HAHN; WoonGu Kang; DeaYeon Kim; GoWoon Kim; H.J. Kim; Yeongduk Kim; CheolHo Lee; EunKyoung Lee; MooHyun Lee; Douglas, Leonard; H.K. Park; Su-yeon Park; Sejin Ra; Keonah Shin
Subject
Calorimeters, ; Cryogenic detectors, ; Double-beta decay detectors, ; Gamma detectors (scintillators, CZT, HPGe, HgI etc)
Publication Date
2020-07
Journal
JOURNAL OF INSTRUMENTATION, v.15, no.7, pp.C07035
Publisher
IOP PUBLISHING LTD
Abstract
© 2020 IOP Publishing Ltd and Sissa Medialab. The Center for Underground Physics (CUP) of the Institute for Basic Science (IBS) is searching for the neutrinoless double-beta decay (0 nu beta beta) of Mo-100 in the molybdate crystals of the AMoRE experiment. The experiment requires pure scintillation crystals to minimize internal backgrounds that can affect the 0 nu beta beta signal. For the last few years, we have been growing and studying Li2MoO4 crystals in a clean-environment facility to minimize external contamination during the crystal growth. Before growing (Li2MoO4)-Mo-100 crystal, we have studied (Li2MoO4)-Mo-nat crystal growth by a conventional Czochralski (CZ) grower. We grew a few different kinds of Li(2)(nat)MO(4)crystals using different raw materials in a campaign to minimize impurities. We prepared the fused Al2O3 refractories for the growth of ingots. Purities of the grown crystals were measured with high purity germanium detectors and by inductively coupled plasma mass spectrometry. The results show that the Li2MoO4 crystal has purity levels suitable for rare-event experiments. In this study, we present the growth of Li2MoO4 crystals at CUP and their purities
URI
https://pr.ibs.re.kr/handle/8788114/7732
DOI
10.1088/1748-0221/15/07/C07035
ISSN
1748-0221
Appears in Collections:
Center for Underground Physics(지하실험 연구단) > 1. Journal Papers (저널논문)
Center for Exotic Nuclear Studies(희귀 핵 연구단) > 1. Journal Papers (저널논문)
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