IONIZATION YIELD OF RADIATIONS .2. THE FLUCTUATIONS OF THE NUMBER OF IONS
IONIZATION YIELD OF RADIATIONS .2. THE FLUCTUATIONS OF THE NUMBER OF IONS
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DOI：
10.1103/physrev.72.26
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发表时间：
1947-01-01
期刊：
影响因子：
--
通讯作者：
FANO, U
中科院分区：
文献类型：
--
作者：
FANO, U
单个快速带电粒子产生的电离经常被用来测量它们的初始能量;涨落效应为这种方法的准确性设置了理论限制。这里导出的公式来估计由恒定量的辐射能量产生的离子数的统计波动。的电离的数量的方差被发现是两个或三个小，如果这个数字是由泊松分布。对波动现象的统计处理有了更好的理解。
The ionization produced by individual fast charged particles is frequently used as a measure of their initial energy; fluctuation effects set a theoretical limit to the accuracy of this method. Formulas are derived here to estimate the statistical fluctuations of the number of ions produced by constant amounts of radiation energy. The variance of the number of ionizations is found to be two or three times smaller than if this number were governed by a Poisson distribution. An improved understanding is gained of the statistical treatment of fluctuation phenomena.