LIED:: laser induced electron diffraction by intense laser-molecule interaction -: an exact non-Born-Oppenheimer simulation of the one-electron system:: H2+

被引：9

作者：

Bandrauk, AD ^{[1
]}

Chelkowski, S ^{[1
]}

机构：

[1] Univ Sherbrooke, Fac Sci, Chim Theor Lab, Sherbrooke, PQ J1K 2R1, Canada

来源：

JOURNAL OF MOLECULAR STRUCTURE-THEOCHEM | 2002年 / 591卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

laser induced electron diffraction; non-Born-Oppenheimer; H-2(+);

D O I：

10.1016/S0166-1280(02)00241-5

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：

Exact non-Born-Oppenheimer simulations of a 1-D model of H-2(+) in an intense short laser pulse are used to investigate the non-linear multiphoton electron emission spectra, also called above-threshold ionization (ATI) spectra. Due to the fast proton motion upon dissociative-ionization, the electron ATI spectra are found to occur at the critical distance R-c similar or equal to 7 a.u. by charge resonance enhanced ionization, CREI. Highly oscillatory ATI spectra occur, which are enhanced by the molecular motion, and these are the signature of incomplete localization of the electron by the laser field. It is suggested that re-scattering effects result in doubling of the ATI intensity oscillations with respect to simple coherent excitation models of the HOMO and LUMO in H-2(+). (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：199 / 205

页数：7

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