Fragment anisotropy on dissociative ionization of NO in two-color intense laser fields

29th International Conference on Photonic, Electronic, and Atomic Collisions

Endo, Tomoyuki^1 ; Ishihara, Ayaka^1 ; Matsuda, Akitaka^1 ; Fushitani, Mizuho^1 ; Hishikawa, Akiyoshi^1

Department of Chemistry, Graduate School of Science, Nagoya University, Aichi Nagoya

464-8602, Japan^1

关键词: Anisotropic distribution;    Dissociative ionization;    Intense laser field;    Intense laser pulse;    Laser polarization;    Left-right asymmetry;    Momentum images;    Relative phase;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/635/11/112027/pdf
DOI  :  10.1088/1742-6596/635/11/112027

来源: IOP

【 摘 要 】

Dissociative ionization of NO, NO → NO++ e-→ N++ O + e-, in ω-2ω two-color phase-controlled intense laser fields was investigated by three-dimensional ion momentum imaging. The momentum image of the N+ion exhibited anisotropic distributions peaked at 35° against the laser polarization, which show clear left-right asymmetry depending on the ω-2ω relative phase. The present study demonstrates that the molecular orbital can be retrieved by distinguishing the difference between the N and O side from the fragment anisotropy by intense laser pulses.