标题： 中国100Mo无中微子双β衰变实验Li2MoO4基辐射热计的预研究 显示英文标题

标题： Pre-study of a Li2MoO4 based bolometer for 100Mo neutrinoless double beta decay experiment in China

摘要： 低温声子闪烁热电偶是一种有前景且极具吸引力的选项，用于搜寻核素无中微子双贝塔衰变。 本文介绍了基于Li2MoO4（LMO）晶体的热电偶预研究，在这项研究中，详细调查了LMO晶体在低温下的特性，包括闪烁特性和比热。 从室温到10 K测量了激发光谱和发光量，并且比热测量到了O(200) mK的温度。 此外，在地面以上的低温平台上制造并测试了一个体积为（2 cm）3的基于LMO的热电偶，该热电偶在超低mK级温度下工作，并取得了良好的能量分辨率。 这些研究为中国制造热电偶探测器以及在中国锦屏地下实验室开展无中微子双贝塔衰变研究奠定了基础。 显示英文摘要

摘要： The cryogenic phonon scintillating bolometer is a promising and extremely attractive option to search for the nuclide neutrinoless double beta decay. In this paper, a pre-study of bolometer based on Li2MoO4 (LMO) crystal is presented, in which the properties of the LMO crystal at the low temperature, including scintillation characteristics and specific heat, are investigated in detail. The excitation spectrum and light yield are measured from the room temperature down to 10 K, and heat capacity is measured down to temperature of O(200) mK. Furthermore, a (2 cm)3 cubic LMO based bolometer is manufactured and tested at ultra-low mK-level temperature in a ground-above cryostat platform, and a good energy resolution is achieved. The studies laid a foundation to manufacture the bolometer detector in China and conduct neutrinoless double beta decay research at the China Jinping Underground Laborator