Ye D F, Liu X, Liu J
Center for Applied Physics and Technology, Peking University, 100084, Beijing, China.
Phys Rev Lett. 2008 Dec 5;101(23):233003. doi: 10.1103/PhysRevLett.101.233003. Epub 2008 Dec 4.
With a semiclassical quasistatic model, we identify the distinct roles of nuclear Coulomb attraction, final-state electron repulsion, and the electron-field interaction in forming the fingerlike (or V-shaped) pattern in the correlated electron momentum distribution for helium double ionization in intense laser field [Phys. Rev. Lett. 99, 263002;Phys.Rev.Lett.99, 263003 (2007)]. The underlying microscopic trajectory configurations responsible for asymmetric electron energy sharing after electron-electron collision have been uncovered, and the corresponding subcycle dynamics is analyzed. The correlation pattern is found to be sensitive to the transverse momentum of correlated electrons.
利用一个半经典准静态模型，我们确定了在强激光场中氦原子双电离的相关电子动量分布中形成指状（或V形）图案时，核库仑引力、末态电子排斥力以及电子-场相互作用的不同作用[《物理评论快报》99, 263002；《物理评论快报》99, 263003 (2007)]。揭示了电子-电子碰撞后导致不对称电子能量共享的潜在微观轨迹构型，并分析了相应的亚周期动力学。发现相关图案对相关电子的横向动量敏感。
