科研之友
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摘要
The photoionization of He+ in two-color XUV fields is studied by numerically solving the time-dependent Schrodinger equation. He+ may be ionized by directly absorbing one high-energetic photon or by absorbing two photons sequentially by mediating an excited state. The interference of these two pathways results in either enhancement or suppression of photoionization, depending on the propagating direction of the photoelectron and the relative phase of two pulses. The two-pathway interference also induces the split of photoelectron momenta. This study shows that the participation of intermediate states may substantially change photoionization processes.
- 出版日期2016-2-12
- 单位上海交通大学
