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首页> 外文期刊>Physics of atomic nuclei >A Technique for Searching for the 2K Capture in Xe-124 with a Copper Proportional Counter
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A Technique for Searching for the 2K Capture in Xe-124 with a Copper Proportional Counter

机译:利用铜比例计数器在Xe-124中搜索2K捕获的技术

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摘要

An experimental technique for searching for the 2K capture in Xe-124 with a large low-background copper proportional counter is described. Such an experiment is conducted at the Baksan Neutrino Observatory of the Institute for Nuclear Research of the Russian Academy of Sciences. The experimental setup is located in the Low-Background Deep-Level Laboratory at a depth of 4900 m.w.e., where the flux of muons of cosmic rays is suppressed by a factor of 10(7) relative to that at the Earth's surface. The setup incorporates a proportional counter and low-background shielding (18 cm of copper, 15 cm of lead, and 8 cm of borated polyethylene). The results of processing the data obtained in 5 months of live measurement time are presented. A new limit on the half-life of Xe-124 with respect to the 2K capture is set at the level of 2.5 x 10(21) years.
机译:描述了使用大型低背景铜比例计数器在Xe-124中搜索2K捕获的实验技术。这种实验是在俄罗斯科学院核研究所的巴克桑中微子天文台进行的。实验装置位于低背景深空实验室中,深度为4900 m.w.e.,相对于地球表面而言,这里的宇宙射线μ子通量被抑制了10(7)倍。该设置包括比例计数器和低背景屏蔽(18厘米的铜,15厘米的铅和8厘米的硼酸化聚乙烯)。给出了在5个月的实时测量时间内获得的数据处理结果。 Xe-124关于2K捕获的半衰期的新限制设置为2.5 x 10(21)年。

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