信阳师范学院学报（自然科学版）2016，Vol.29Issue(3)：351-355,5.DOI:10.3969/j.issn.1003-0972.2016.03.011
激光脉宽对椭偏光驱动的原子次序双电离的影响
Influence of Pulse Duration on Atomic Sequential Double Ionization by Elliptical Laser Pulses
摘要
Abstract
By a classical ensemble method,the influence of pulse duration on sequential double ionization (SDI)of Ar atoms driven by elliptically polarized laser pulse was investigated.The results showed that the dou-bly charged ion momentum distribution depends strongly on pulse duration.As the pulse duration increases,the ion momentum distribution changes from two-band to four-band structure,and finally to the six-band structure. Back analysis of double ionization trajectories not only manifested the subcycle electron emission in sequential double ionization by elliptically polarized laser pulses,but also showed that the variation of the band structure was originated from the pulse duration dependence of the ionization time of the second electron.关键词
次序双电离/脉冲宽度/亚周期电子出射/椭偏激光脉冲Key words
sequential double ionization/pulse duration/subcycle electron emission/elliptical laser pulses分类
数理科学引用本文复制引用
童爱红..激光脉宽对椭偏光驱动的原子次序双电离的影响[J].信阳师范学院学报（自然科学版）,2016,29(3):351-355,5.基金项目
国家自然科学基金项目(11404105) （11404105）
