title: Contribution of recollision ionization to the cross-shaped structure in nonsequential double ionization.
abstract: With the three-dimensional classical ensemble model, we investigate the correlated electron emission in nonsequential double ionization (NSDI) of argon atoms by few-cycle laser pulses. Our calculations well reproduce the experimentally observed cross-shaped structure in the correlated two-electron momentum spectrum [ Nature Commun. 3, 813 (2012)]. By tracing these NSDI trajectories, we find that besides the process of recollision-induced excitation with subsequent ionization just before the next field maximum, the recollision ionization also significantly contributes to the cross-shaped structure.
authors.affiliation: Wuhan National Laboratory for Optoelectronics and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China.
authors.forename: Cheng
authors.initials: C
authors.lastname: Huang
authors.forename: Yueming
authors.initials: Y
authors.lastname: Zhou
authors.forename: Qingbin
authors.initials: Q
authors.lastname: Zhang
authors.forename: Peixiang
authors.initials: P
authors.lastname: Lu
mesh_terms: D003198:Computer Simulation; D007477:Ions / Q000737:chemistry* / Q000528:radiation effects*; D007834:Lasers; D008956:Models, Chemical; D011829:Radiation Dosage
chemical_list: D007477:Ions