Non-adiabatic effects in Van Der Waals broadening

In the Lindholm-Foley adiabatic line broadening theory, the effect of a collision is taken into account by an averaged (over m-degenerate levels) phase shift. In this note, the correct effect of mixing amongst the m- degenerate levels has been obtained by calculating S-matrix elements using a long r...

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Bibliographic Details
Published in:Journal of quantitative spectroscopy & radiative transfer 1971, Vol.11 (8), p.1271-1274
Main Authors: Stacey, D.N., Cooper, J.
Format: Article
Language:English
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Summary:In the Lindholm-Foley adiabatic line broadening theory, the effect of a collision is taken into account by an averaged (over m-degenerate levels) phase shift. In this note, the correct effect of mixing amongst the m- degenerate levels has been obtained by calculating S-matrix elements using a long range dipole-dipole interaction. The results show only small deviations (less than 5 per cent) from the Lindholm-Foley theory.
ISSN:0022-4073
1879-1352
DOI:10.1016/0022-4073(71)90100-2