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Ionization Discrimination Properties of Spark Chambers

机译：火花腔的电离判别特性

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摘要

Spark chamber behavior with respect to heavy and minimum ionizing particles is investigated in an attempt to find suitable gases and modes of operation that would permit ionization discrimination. Chambers having a gap of 10±0.05 mm and fillings of pure helium, pure argon, and helium‐argon mixtures were analyzed. It was found that for the given modes of operation only argon‐filled chambers show useful ionization discrimination properties, while chambers with pure helium fillings have practically none. The results obtained for helium‐argon mixtures are better than those for pure helium but inferior to those obtained for pure argon fillings. Curves showing the chamber responses with respect to 210Po alpha and minimum ionizing particles are presented for helium and for argon filled chambers. The effect of gas contamination is discussed and some data are given.
机译：为了找到合适的气体和允许电离判别的工作模式，研究了有关重离子和最小电离粒子的火花腔性能。对间隙为10±0.05 mm的腔室以及纯氦气，纯氩气和氦气-氩气混合物的填充物进行了分析。已经发现，对于给定的操作模式，只有充满氩气的腔室显示出有用的电离辨别特性，而带有纯氦填充物的腔室几乎没有。氦-氩混合物获得的结果优于纯氦，但次于纯氩填充物。对于氦气和充满氩气的腔室，给出了显示关于210Poα和最小电离粒子的腔室响应的曲线。讨论了气体污染的影响并给出了一些数据。

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