The effect of electron initial longitudinal velocity on the non-sequential double ionization process in an elliptically polarized laser field

• 来源期刊: 中国物理B（英文版）
• 关键词: non-sequential double ionization initial longitudinal velocity elliptically polarized laser field single return collision
• 年，卷（期）: 2012,（8）
• 页码范围: 191-196
• 页数: 6页
• 语种: 英文
• DOI: 10.1088/1674-1056/21/8/083304

摘要

The effect of initial longitudinal velocity of the tunnelled electron on the non-sequential double ionization (NSDI)process in an elliptically polarized laser field is studied by a semiclassical model.We find that the non-zero initial longitudinal velocity has a suppressing effect on single-return collision (SRC) events in the double ionization process,more specifically,it results in an obvious reduction in the center part of the correlation momentum distributions in the direction of the major polarization axis (z axis) and makes the distribution of single-return collision in the minor polarization axis (x axis) become narrower.