EDELWEISS- III中锗探测器宇宙起源激活的测量
Measurement of the cosmogenic activation of germanium detectors in EDELWEISS-III
摘要：
我们提出了一个测量的宇宙起源激活的锗低温探测器的EDELWEISS III直接暗物质搜索实验。探测器在地面以上不同暴露于宇宙射线的情况下测量到的衰变率被转换成不同同位素的产生率。以核/kg/天为单位，测得的$^3$ H的生产率为82 $\pm$ 21，$^{49}$ V为2.8 $\pm$ 0.6，$^{55}$ Fe为4.6 $\pm$ 0.7，$^{65}$ Zn为106 $\pm$ 13。这些结果对于这些同位素是最准确的。还提出了$^{68}$ Ge生产率的下限为74个核/kg/天。他们进行了比较，目前在文献中的模型预测和估计计算的ACTIVIA代码。
英文摘要：
We present a measurement of the cosmogenic activation in the germanium cryogenic detectors of the EDELWEISS III direct dark matter search experiment. The decay rates measured in detectors with different exposures to cosmic rays above ground are converted into production rates of different isotopes. The measured production rates in units of nuclei/kg/day are 82 $\pm$ 21 for $^3$H, 2.8 $\pm$ 0.6 for $^{49}$V, 4.6 $\pm$ 0.7 for $^{55}$Fe, and 106 $\pm$ 13 for $^{65}$Zn. These results are the most accurate for these isotopes. A lower limit on the production rate of $^{68}$Ge of 74 nuclei/kg/day is also presented. They are compared to model predictions present in literature and to estimates calculated with the ACTIVIA code.
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