圆偏光驱动的分子双电离的计算  

Calculation of Molecular Double Ionization by Circularly Polarized Laser Pulses

作　　者：童爱红[1] 

机构地区：[1]湖北第二师范学院物理与机电工程学院,武汉430205

出　　处：《湖北第二师范学院学报》2015年第8期8-10,共3页Journal of Hubei University of Education

摘　　要：本文利用经典系综模型计算了圆偏场驱动的中等核间距双原子分子双电离。结果表明,双电离电子沿分子轴平行方向和垂直方向的结合动量分布都主要分布在二、四象限,表明双电离电子主要沿相反方向出射。向后分析双电离轨迹表明,这种结合电子动量分布的起源是两个电子的电离时间延迟为半周期的奇数倍。Using classical ensemble model,we calculate double ionization of diatomic molecules with mediate internuclear distance driven by circularly polarized laser pulses. The results show that the joint electron momentum distributions in the directions parallel and perpendicular to the molecular axis are dominated in the second and fourth quadrants,indicating that the two electrons are emitted into opposite directions. By back analysis of double ionization trajectories,the origin of these electron momentum distributions is that the time delay between double ionization and single ionization is integral multiples of half cycle.

关 键 词：圆偏激光 次序双电离 结合电子动量分布 

分 类 号：O561.4[理学—原子与分子物理]