Absolute electron impact ionization cross sections for , where X = H, F, Cl, Br, and I
Absolute electron impact ionization cross sections for , where X = H, F, Cl, Br, and I
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的绝对电子碰撞电离截面，其中 X = H、F、Cl、Br 和 I
DOI：
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发表时间：
1997
期刊：
影响因子：
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通讯作者：
P. W. Harland
中科院分区：
文献类型：
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作者：
C. Vallance;S. Harris;J. Hudson;P. W. Harland
测量了甲烷和系列甲基氟化物到甲基碘的电子轰击电离截面。将甲烷和甲基氟化物对甲基溴的电离效率曲线与Deutsch-Mark(DM)和二元相遇Bethe(BEB)方法计算的电离效率曲线进行了比较，也与从头算模型的结果进行了比较，该模型给出了分子取向的最大截面。此外，还用从头算方法和DM方法计算了甲基氯电子碰撞电离的空间比，并与已有的实验结果进行了比较。
Measurements of electron impact ionization cross sections have been made for methane and the series methyl fluoride to methyl iodide. The results for methane and methyl fluoride to methyl bromide have been compared with ionization efficiency curves calculated using Deutsch - Mark (DM) and binary-encounter-Bethe (BEB) methods, and also with the results of an ab initio model which gives the maximum cross section as a function of molecular orientation. In addition, the ab initio and DM methods have been used to calculate the steric ratios for the electron impact ionization of methyl chloride which have been compared with experimental measurements made previously.