Excitation of the four fundamental vibrations of CH4 by electron impact near threshold
Excitation of the four fundamental vibrations of CH4 by electron impact near threshold
复制标题
阈值附近的电子碰撞激发 CH4 的四种基本振动
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
M. Allan
中科院分区：
文献类型：
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作者：
M. Allan
已在 90° 和 0.1 至 1.5 eV 范围内测量了 CH4 的绝对微分弹性和振动激励截面，并具有所有四种振动模式的分辨率。在 ν1、ν3 和 ν4 模式的激发中观察到阈值峰值，但在 ν2 模式中没有观察到阈值峰值。这些结果与 Nishimura 和 Gianturco (2002 J. Phys. B: At. Mol. Opt. Phys. 35 2873) 最近的计算结果非常一致。没有观察到近阈值结构。
Absolute differential elastic and vibrational excitation cross sections have been measured for CH4 at 90° and from 0.1 to 1.5 eV, with the resolution of all four vibrational modes. Threshold peaks were observed in the excitation of the ν1, ν3 and ν4 modes, but not in the ν2 mode. These results are in good agreement with the recent calculation of Nishimura and Gianturco (2002 J. Phys. B: At. Mol. Opt. Phys. 35 2873). No near-threshold structures were observed.