分子双电离对激光偏振性的依赖关系  

Laer polarization dependence of double ionization of molecules

作　　者：童爱红[1] 冯国强[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：《物理学报》2014年第2期123-131,共9页Acta Physica Sinica

基　　金：湖北省教育厅杰出青年基金(批准号:Q20133001);湖北省自然科学基金(批准号:2013CFB015);理论物理专款基金(批准号:11347189)资助的课题~~

摘　　要：利用经典系综模型研究了氢分子双电离对激光场椭圆率的依赖性.研究发现,氢分子双电离机制对激光的椭偏性有强烈的依赖关系.随着激光场椭圆率的增加,双电离机制由非次序双电离转变为次序双电离.在大椭圆率情况的次序双电离中,电子关联动量分布随椭圆率的灵敏变化显示了电子出射时间对椭圆率的强烈依赖关系.Using classical ensemble method, we investigate the laser ellipticity dependence of double ionization （DI） of H2 molecules. The results show that DI mechanism of H2 molecules depends strongly on laser polarization. As the ellipticity increases, the DI mechanism changes from nonsequential DI to sequential DI. For sequential DI in the case of large ellipticity, the momentum distribution of the two electrons depends sensitively on ellipticity, which indicates the sensitive dependence of the release time of two electrons on ellipticity.

关 键 词：双电离 椭圆率 关联动量分布 出射时间 

分 类 号：O562.4[理学—原子与分子物理]