用于高灵敏度无中微子双 beta 衰变搜寻的含 $^{100}$Mo 闪烁量热器的研制
仪器与探测器
2018-01-24 v2 核实验
摘要
本文报道了涉及富集 Mo 闪烁量热器技术的开发，该技术与 CUPID 的目标兼容，CUPID 是一个拟议的用于搜寻无中微子双 beta 衰变的下一代量热实验。已生产出大质量（1~kg）、高光学质量、放射纯净的含 Mo 钼酸锌和钼酸锂晶体，并用于开发基于 0.2--0.4~kg 闪烁量热器的高性能单探测器模块。特别是，钼酸锂探测器在 Mo 双 beta 跃迁 值（3034~keV）附近的能量分辨率为 4--6~keV FWHM。在 2.6~MeV 以上，对 诱导的主导本底的排除优于 8。通过晶锭再结晶，确保了晶体中 Th (Th) 和 Ra 的放射性活度低于 10~Bq/kg。仅用 10~kgd 的曝光量，就证明了富集 Mo 闪烁量热器进行高灵敏度双 beta 衰变搜寻的潜力：以迄今最高精度测量了 Mo 的双中微子双 beta 衰变半衰期， = [6.90 0.15(stat.) 0.37(syst.)] 10~yr。结晶技术和探测器技术均倾向于选择钼酸锂，它已被选用于正在建设的 CUPID-0/Mo 演示装置，该装置包含数公斤的 Mo。
关键词
引用
@article{arxiv.1704.01758,
title = {Development of $^{100}$Mo-containing scintillating bolometers for a high-sensitivity neutrinoless double-beta decay search},
author = {E. Armengaud and C. Augier and A. S. Barabash and J. W. Beeman and T. B. Bekker and F. Bellini and A. Benoît and L. Bergé and T. Bergmann and J. Billard and R. S. Boiko and A. Broniatowski and V. Brudanin and P. Camus and S. Capelli and L. Cardani and N. Casali and A. Cazes and M. Chapellier and F. Charlieux and D. M. Chernyak and M. de Combarieu and N. Coron and F. A. Danevich and I. Dafinei and M. De Jesus and L. Devoyon and S. Di Domizio and L. Dumoulin and K. Eitel and C. Enss and F. Ferroni and A. Fleischmann and N. Foerster and J. Gascon and L. Gastaldo and L. Gironi and A. Giuliani and V. D. Grigorieva and M. Gros and L. Hehn and S. Hervé and V. Humbert and N. V. Ivannikova and I. M. Ivanov and Y. Jin and A. Juillard and M. Kleifges and V. V. Kobychev and S. I. Konovalov and F. Koskas and V. Kozlov and H. Kraus and V. A. Kudryavtsev and M. Laubenstein and H. Le Sueur and M. Loidl and P. Magnier and E. P. Makarov and M. Mancuso and P. de Marcillac and S. Marnieros and C. Marrache-Kikuchi and S. Nagorny and X-F. Navick and M. O. Nikolaichuk and C. Nones and V. Novati and E. Olivieri and L. Pagnanini and P. Pari and L. Pattavina and M. Pavan and B. Paul and Y. Penichot and G. Pessina and G. Piperno and S. Pirro and O. Plantevin and D. V. Poda and E. Queguiner and T. Redon and M. Rodrigues and S. Rozov and C. Rusconi and V. Sanglard and K. Schäffner and S. Scorza and V. N. Shlegel and B. Siebenborn and O. Strazzer and D. Tcherniakhovski and C. Tomei and V. I. Tretyak and V. I. Umatov and L. Vagneron and Ya. V. Vasiliev and M. Velazquez and M. Vignati and M. Weber and E. Yakushev and A. S. Zolotarova},
journal= {arXiv preprint arXiv:1704.01758},
year = {2018}
}
备注
25 pages, 12 figures, 8 tables; submitted to EPJC