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arXiv 0812.4307nucl-exastro-ph
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(α,n)感生中子作为暗物质实验背景的评价

Evaluation of (alpha,n) Induced Neutrons as a Background for Dark Matter Experiments

D. -M. Mei, C. Zhang, A. Hime

摘要:

通过钍和铀衰变产生的($α$,n)反应的中子是直接探测暗物质的重要背景源。中子产额和能谱的范围内的材料,用于建立暗物质探测器的计算和制表。除了钍和铀的衰变外,我们还发现来自钐的$α$粒子,通常是光电倍增管(PMT)窗口材料的掺杂剂,也是中子产额的重要来源。本文中的结果可以作为输入的蒙特卡罗模拟的许多材料,将用于下一代实验。

英文摘要:

Neutrons from ($α$,n) reactions through thorium and uranium decays are important sources of background for direct dark matter detection. The neutron yields and energy spectra from a range of materials that are used to build dark matter detectors are calculated and tabulated. In addition to thorium and uranium decays, we found that $α$ particles from samarium, often the dopant of the window materials of photomultiplier tubes (PMT), are also an important source of neutron yield. The results in this paper can be used as the input to Monte Carlo simulations for many materials that will be used for next generation experiments.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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