On the combined Doppler and pressure broadening of nonresonant spectral lines
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Published:1988-04-01
Issue:4
Volume:66
Page:341-348
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ISSN:0008-4204
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Container-title:Canadian Journal of Physics
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language:en
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Short-container-title:Can. J. Phys.
Author:
Diaz M. A.,Palomares F.,Veguillas J.
Abstract
An explicit spectral function for nonresonant transitions has been derived that includes pressure broadening, Doppler broadening, and diffusional narrowing. This has been accomplished through a kinetic-equation approach. The kinetic equation has been resolved by using an extension of the Bhatnagar–Gross–Krook collision model to inelastic collisions, characterized by two collision frequencies: one associated with elastic collisions and the other associated with inelastic ones. The high- and low-density limits have been discussed, and the standard formula for Debye relaxation has been reproduced. Finally, a discussion concerning the above aspects and their possible extensions has been included as well.
Publisher
Canadian Science Publishing
Subject
General Physics and Astronomy