Open AccessInternuclear-distance dependence of nonsequential double ionization of H2 in different alignments
Author(s) -
Aihong Tong,
Qing Liao,
Yueming Zhou,
Peixiang Lu
Publication year - 2011
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.60.043301
Subject(s) - diatomic molecule , double ionization , atomic physics , physics , ionization , maxima , molecule , laser , polarization (electrochemistry) , molecular physics , ion , optics , chemistry , quantum mechanics , art , performance art , art history
Using a three-dimensional classical ensemble, we have investigated the internuclear distance (R) dependence of nonsequential double ionization (NSDI) of H2 molecules. In all alignments, as R increases, the double ionization (DI) rate first increases and then decreases, and it reaches its maxima when R is 4a.u.. The dependence of NSDI of H2 on R weakens as the angle between molecular axis and laser polarization(φ) increases. When φ is zero, the NSDI of H2 provides rich correlation patterns, which is strongly dependent on R. When φ is π/2, the correlation patterns are similar for different values of R and recollisions play a more important role in DI process. These results indicate that molecular structure has an important influence on NSDI of diatomic molecules.