Orientational averaging in the intense field tunnel ionization of molecules

被引：21

作者：

DeWitt, MJ ^{[1
]}

Prall, BS ^{[1
]}

Levis, RJ ^{[1
]}

机构：

[1] Wayne State Univ, Dept Chem, Detroit, MI 48202 USA

来源：

JOURNAL OF CHEMICAL PHYSICS | 2000年 / 113卷 / 04期

关键词：

D O I：

10.1063/1.481941

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The effect of molecular structure and orientation on the rate of tunnel ionization in intense laser fields is considered for linear molecules. The nonspherical nature of the molecular electrostatic potential near the classical electron turning point results in a nonisotropic distribution of tunneling rates. This must be considered when determining the overall ionization rate of a randomly oriented ensemble. Calculations are performed for two atom:molecule test pairs with similar ionization potential, Ar:N-2 and Xe:O-2, and the results are compared to experiments [Talebpour, Chien, and Chin, J. Phys. B 29, L677 (1996); Guo , Phys. Rev. A 58, R4271 (1998)]. (C) 2000 American Institute of Physics. [S0021-9606(00)00322-6].

引用

页码：1553 / 1558

页数：6

共 11 条

[1]

Ammosov M. V., 1986, Soviet Physics - JETP, V64, P1191

[2] Charge-resonance-enhanced ionization of molecular ions in intense laser pulses: Geometric and orientation effects [J].