Open AccessThe dynamic process of two-electron atom irradiated by intense laser pulse using time dependent quantum Monte Carlo method
Author(s) -
Fei Guo,
Yang Song,
Ji-Gen Chen,
Siliang Zeng,
Yu-Jun Yang
Publication year - 2012
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.61.163203
Subject(s) - physics , wave packet , electron , monte carlo method , quantum monte carlo , time evolution , laser , atom (system on chip) , ionization , pulse (music) , atomic physics , computational physics , quantum mechanics , ion , computer science , statistics , mathematics , voltage , embedded system
We investigate the electron dynamic process of a one-dimensional two-electron atom irradiated by strong laser pulse using the improved time-dependent quantum Monte Carlo (TDQMC) scheme. By comparison with the scheme for solving the time-dependent Schrdinger equation by using the accurate numerical integration, the dynamic variation of particle in a quantum ensemble, corresponding to the calculated wave-packet, is consistent with the evolution of time-dependent wavepacket. The computation efficiency of the TDQMC is more largely enhanced than that of the time-dependent integration method. According to the dynamic evolution behaviors of the calculated classical particle ensemble, we analyze the excitation, ionization, recombination of electron and other non-linear processes in a strong laser field.