Open AccessThree-dimensional classical micro-canonical simulation of nonsequential double ionization with a few-cycle laser pulse
Author(s) -
Qun Tang,
Dongling Zhang,
Bo Yu,
Chuanfei Dong
Publication year - 2010
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.59.7775
Subject(s) - carrier envelope phase , physics , momentum (technical analysis) , atomic physics , ionization , envelope (radar) , pulse (music) , ion , laser , electron , asymmetry , double ionization , phase (matter) , coulomb , quantum mechanics , telecommunications , radar , finance , voltage , computer science , economics
A three-dimensional classical micro-canonical model is used to investigate the ion momentum distributions of Ar atom in nonsequential double ionization with a few-cycle laser pulse. It is found that the momentum distribution has a strong dependence on the carrier-envelope phase of the few-cycle pulse. The centre of gravity of the asymmetry distribution shifts from negative to positive ion momenta with carrier-envelope phase increasing and it is reversed when the carrier-envelope phase changes by π. The momentum distributions of the Ar2+ ion show excellent agreement with the experimental results when we take into account the change in Coulomb potential between the nucleus and electron in the recollision process.