Dissociative Autoionization in (1+2)-photon Above Threshold Excitation of H2 Molecules
Atomic and Molecular Clusters
2009-10-31 v1
Abstract
We have theoretically studied the effect of dissociative autoionization on the photoelectron energy spectrum in (1+2)-photon above threshold ionization(ATI) of H2 molecules. We have considered excitation from the ground state X-singlet-Sigma-g+(v=0,j) to the doubly excited autoionizing states of singlet-Sigma-u+ and singlet-Pi-u+ symmetry, via the intermediate resonant B-singlet-Sigma-u+(v=5,j) states. We have shown that the photoelectron energy spectrum is oscillatory in nature and shows three distinct peaks above the photoelectron energy 0.7 eV. This feature has been observed in a recent experiment by Rottke et al, J. Phys. B, Vol. 30, p-4049 (1997).
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Cite
@article{arxiv.physics/9902025,
title = {Dissociative Autoionization in (1+2)-photon Above Threshold Excitation of H2 Molecules},
author = {Krishna Rai Dastidar and Ratan Kumar Das},
journal= {arXiv preprint arXiv:physics/9902025},
year = {2009}
}
Comments
11 pages and 4 figures