Resonant effects in photoionization of H2 and D2
Resonant effects in photoionization of H2 and D2
复制标题
H2 和 D2 光电离的共振效应
DOI：
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发表时间：
1997
期刊：
影响因子：
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通讯作者：
F. Martín
中科院分区：
文献类型：
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作者：
I. Sánchez;F. Martín
我们计算了H_2和D_2的光致电离截面，重点研究了中间双激发态的共振效应。理论方法一致地描述了共振和非共振电离过程之间的干扰，并包括解离和非解离通道。我们发现，在与1Σu+对称性相关的振动分辨光谱中，共振峰相当明显。相反，在总的光电离光谱中没有观察到共振结构，这与最近的实验结果一致。最后，我们发现解离的光离子与未解离的光离子的比率强烈地依赖于共振效应。
We have evaluated photoionization cross sections of H2 and D2 with emphasis in resonant effects through intermediate doubly excited states. The theoretical method describes consistently the interference between resonant and nonresonant ionization processes, and includes both dissociative and nondissociative channels. We show that resonant peaks are rather apparent in vibrationally resolved spectra associated to the 1Σu+ symmetry. In contrast, no resonant structure is observed in the total photoionization spectra, in agreement with recent experimental findings. Finally, we show that the ratios of dissociated to undissociated photoions strongly depend on resonant effects.