The Center for Underground Physics (CUP) of the Institute for Basic Science (IBS) is searching for the neutrinoless double-beta decay (0{\nu}\b{eta}\b{eta}) of 100Mo in the molybdate crystals of the AMoRE experiment. The experiment requires pure scintillation crystals to minimize internal backgrounds that can affect the 0{\nu}\b{eta}\b{eta} 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 Li2100MoO4 crystal, we have studied Li2natMoO4 crystal growth by a conventional Czochralski (CZ) grower. We grew a few different kinds of Li2natMO4 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.

中文翻译：

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用于 CUP 稀有事件实验的纯 Li2MoO4 晶体的生长和开发

基础科学研究所 (IBS) 的地下物理中心 (CUP) 正在寻找钼酸盐晶体中 100 Mo 的中微子双β衰变 (0{\nu}\b{eta}\b{eta}) AMoRE 实验。该实验需要使用纯闪烁晶体来最小化可能影响 0{\nu}\b{eta}\b{eta} 信号的内部背景。在过去的几年里，我们一直在清洁环境的设施中生长和研究 Li2MoO4 晶体，以尽量减少晶体生长过程中的外部污染。在生长 Li2100MoO4 晶体之前，我们研究了用传统的直拉 (CZ) 生长器生长 Li2natMoO4 晶体。我们使用不同的原材料培育了几种不同种类的 Li2natMO4 晶体，以尽量减少杂质。我们制备了用于铸锭生长的电熔 Al2O3 耐火材料。生长晶体的纯度用高纯度锗检测器和电感耦合等离子体质谱法测量。结果表明，Li2MoO4 晶体具有适合稀有事件实验的纯度水平。在这项研究中，我们展示了 Li2MoO4 晶体在 CUP 上的生长及其纯度。