TITLE

A new photon angular momentum approximation for molecular collisions in intense nonresonant laser fields

AUTHOR(S)
Madsen, Dane K.; Eno, Larry
PUB. DATE
January 1995
SOURCE
Journal of Chemical Physics;1/22/1995, Vol. 102 Issue 4, p1658
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We here explore a new scheme for dealing with the photon angular momentum effects which arise in the analysis of collisions in intense nonresonant laser fields. The scheme involves approximating the system total angular momentum so as to create a reduced set of dynamical equations depending parametrically upon the relative orientation of laser field axis and system transition dipole moment. The equations are solved as a function of orientation and results are collected using numerical quadrature. We examine the scheme in application to a model collision problem. Comparing with the results of exact calculations we find that the new scheme is very effective in determining the magnitudes of S-matrix elements but not the corresponding phases. The scheme is also compared with an earlier one which involves predynamical orientation averaging of laser–particle coupling elements. We find that the new scheme is at least as accurate as the earlier and is much more tractable computationally. © 1995 American Institute of Physics.
ACCESSION #
7638633

 

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