title: Revealing the multi-electron effects in sequential double ionization using classical simulations.
abstract: We theoretically investigated sequential double ionization (SDI) of Ar by the nearly circularly polarized laser pulses with a fully correlated classical ensemble model. The ion momentum distributions of our numerical results at various laser intensities and pulse durations agree well with the experimental results. The experimentally observed multi-electron effects embodied in the joint momentum spectrum of the two electrons is also reproduced by our correlated classical calculations. Interestingly, our calculations show that the angular distribution of the first photoelectron from the trajectories which eventually suffer SDI differs from the distribution of the photoelectrons from above-threshold ionization trajectories. This observation provides additional evidence of multi-electron effects in strong field SDI.
authors.affiliation: Wuhan National Laboratory for Optoelectronics and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China.
authors.forename: Yueming
authors.initials: Y
authors.lastname: Zhou
authors.forename: Cheng
authors.initials: C
authors.lastname: Huang
authors.forename: Peixiang
authors.initials: P
authors.lastname: Lu
mesh_terms: D001128:Argon / Q000737:chemistry*; D003198:Computer Simulation; D004583:Electrons; D007477:Ions / Q000737:chemistry*; D008956:Models, Chemical; D011789:Quantum Theory
chemical_list: D007477:Ions; D001128:Argon