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Dissociative Autoionization in (1+2)-photon Above Threshold Excitation of H2 Molecules | | Krishna Rai Dastidar
; Ratan Kumar Das
; | | Date: |
10 Feb 1999 | | Subject: | Atomic and Molecular Clusters | physics.atm-clus | | 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). | | Source: | arXiv, physics/9902025 | | Services: | Forum | Review | PDF | Favorites | |
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