用于无中微子双β衰变研究的~（82）Se富集的硒化锌（ZnSe）晶体的制备
Production of 82Se enriched Zinc Selenide (ZnSe) crystals for the study of neutrinoless double beta decay
摘要：
从元素Zn和Se开始制备高纯度硒化锌（ZnSe）晶体，以用于82 Se的无中微子双β衰变（0νDBD）的研究。为了增加放射核素的数量，使用了富集的82 Se。组装了专用生产线，用于合成和调节Zn 82 Se粉末，以使其适合晶体生长，符合稀有事件物理实验特定的放射性纯度限制。除了常规的杂质浓度检测外，还对用于ZnSe晶体生产的原料、反应物、消耗品、辅料和中间产品中的放射性同位素浓度进行了高灵敏度的测量。说明了晶体的完美性以及如何实现。由于使用非常昂贵的同位素富集材料（82 Se），因此特别注意在所有生产阶段的质量平衡中获得最大产率。生产和认证协议，并说明所得的即用型Zn 82 Se晶体。
英文摘要：
High purity Zinc Selenide (ZnSe) crystals are produced starting from elemental Zn and Se to be used for the search of the neutrinoless double beta decay (0νDBD) of 82Se. In order to increase the number of emitting nuclides, enriched 82Se is used. Dedicated production lines for the synthesis and conditioning of the Zn82Se powder in order to make it suitable for crystal growth were assembled compliant with radio-purity constraints specific to rare event physics experiments. Besides routine check of impurities concentration, high sensitivity measurements are made for radio-isotope concentrations in raw materials, reactants, consumables, ancillaries and intermediary products used for ZnSe crystals production. Indications are given on the crystals perfection and how it is achieved. Since very expensive isotopically enriched material (82Se) is used, a special attention is given for acquiring the maximum yield in the mass balance of all production stages. Production and certification protocols are presented and resulting ready-to-use Zn82Se crystals are described.
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