Performances of a large mass ZnMoO4 scintillating bolometer for a next generation 0νDBD experiment
Performances of a large mass ZnMoO4 scintillating bolometer for a next generation 0νDBD experiment
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用于下一代 0νDBD 实验的大质量 ZnMoO4 闪烁辐射热测量计的性能
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发表时间：
2012
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通讯作者：
M. Vignati
中科院分区：
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作者：
J. Beeman;F. Bellini;C. Brofferio;L. Cardani;N. Casali;O. Cremonesi;I. Dafinei;S. Domizio;F. Ferroni;E. Gorello;E. Galashov;L. Gironi;S. Nagorny;F. Orio;M. Pavan;L. Pattavina;G. Pessina;G. Piperno;S. Pirrò;E. Previtali;C. Rusconi;V. Shlegel;C. Tomei;M. Vignati
我们提出了一个330克的锌钼（ZnMoO 4）晶体的性能，作为一个可能的候选人，为下一代的实验，以寻找100 Mo的无中微子双β衰变的测量测辐射热计。在~（208）Tl的2615 keV γ谱线上，能量分辨率为6.3keV半高宽。ZnMoO_4的内部放射性污染为<6 μBq/kg（~（228）Th）和27±6 μBq/kg（~（226）Ra）。我们还提出了α与β/γ的歧视，通过闪烁光以及通过单独的热信号的形状的研究获得的结果。
We present the performances of a 330 g zinc molybdate (ZnMoO4) crystal working as scintillating bolometer as a possible candidate for a next generation experiment to search for neutrinoless double beta decay of 100Mo. The energy resolution, evaluated at the 2615 keV γ-line of 208Tl, is 6.3 keV FWHM. The internal radioactive contaminations of the ZnMoO4 were evaluated as <6 μBq/kg (228Th) and 27±6 μBq/kg (226Ra). We also present the results of the α vs β/γ discrimination, obtained through the scintillation light as well as through the study of the shape of the thermal signal alone.