减少氡析出的研究
Studies on the Reduction of Radon Plate-Out
摘要：
普通放射性气体（如氡）的衰变通过一系列具有不同半衰期的子体粒子产生稳定的同位素。这些子粒子是伽马、中子和α粒子背景的重要来源，可以模拟暗物质和无中微子双β衰变实验中所需的信号。在南卫理公会大学（SMU）的LUMINA实验室，使用XIA的前五个UltraLo 1800 α计数器之一进行了铜样品上氡析出的研究。我们提出了各种缓解方法的调查结果。定制的铜支架（塑料或金属）已被设计和生产，以最大限度地提高铜的暴露于220 Rn。220Rn源是一组野营灯笼罩。我们目前的控制和实验方法，解决氡暴露水平的现状。
英文摘要：
The decay of common radioactive gases, such as radon, produces stable isotopes by a sequence of daughter particles with varied half-lives. These daughter particles are a significant source of gamma, neutron, and alpha particle backgrounds that can mimic desired signals in dark matter and neutrinoless double beta decay experiments. In the LUMINA Laboratory at Southern Methodist University (SMU), studies of radon plate-out onto copper samples are conducted using one of XIA's first five UltraLo 1800 alpha counters. We present results from investigations into various mitigation approaches. A custom-built copper holder (in either plastic or metal) has been designed and produced to maximize the copper's exposure to 220Rn. The 220Rn source is a collection of camping lantern mantles. We present the current status of control and experimental methods for addressing radon exposure levels.
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