A THEORY OF CAVITY IONIZATION
A THEORY OF CAVITY IONIZATION
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DOI：
10.2307/3570326
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发表时间：
1955-01-01
影响因子：
3.4
通讯作者：
ATTIX, FH
中科院分区：
文献类型：
--
作者：
SPENCER, LV;ATTIX, FH
本文提出了一种空腔电离理论，它考虑了在电子-电子碰撞中产生的快速二次电子的运动，而这种运动在布拉格-格雷理论中是被忽略的。这个问题是示意性的定义为“快速”secondaries那些能量高于阈值A足以跨越腔。基于该理论的计算结果与Attix和DeLaVergne的实验结果比Bragg-Gray理论计算结果更接近。当壁和气体原子序数非常不同时，理论差异最大。本理论预测的电离对腔体尺寸的依赖关系与Gray的测量结果一致。外推到零空腔尺寸的解释被证明是更复杂的比已经相信。
A theory of cavity ionization is presented which takes into account the travel of fast secondary electrons generated in electron-electron collisions, an effect disregarded in the Bragg-Gray theory. The problem is schematized by defining as "fast" secondaries those with energy above a threshold A sufficient to span the cavity. Calculations based on this theory show closer agreement with experiments of Attix and DeLaVergne than Bragg-Gray theory calculations. The theories differ most when the wall and gas atomic numbers are very different. The dependence of ionization on the cavity size predicted by the present theory agrees with measurements by Gray. The interpretation of extrapolation to zero cavity size is shown to be more complex than had been believed.