摘要
We present energy-resolved angular distributions of photoelectrons generated in above-threshold ionization (ATI) of nonaligned diatomic molecules N2 and O2 in high-intensity short laser pulses, with emphasis on the most energetic part of the spectra. The angular distribution for photoelectrons with energy of 10Up (Up: ponderomotive energy), i.e., the plateau cutoff in ATI spectra, is found to be broader in O2 than in N2. Resorting to the analyses from both an S-matrix theory and an intuitive semiclassical model, we attribute the observation to the effect of the ground state molecular orbital structure on high-energy electron emission in strong-field molecular ionization.
| 源语言 | 英语 |
|---|---|
| 文章编号 | 203001 |
| 期刊 | Physical Review Letters |
| 卷 | 104 |
| 期 | 20 |
| DOI | |
| 出版状态 | 已出版 - 19 5月 2010 |
| 已对外发布 | 是 |
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