Redistribution of radiation in the presence of velocity-changing collisions

Details Redistribution of radiation in the presence of velocity-changing collisions Redistribution of radiation in the presence of velocity-changing collisions

Jun 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...305..852h&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 305, June 15, 1986, p. 852-862. NASA-NBS-supported research.

Astronomy and Astrophysics

Astrophysics

11

Atomic Collisions, Doppler Effect, Radiative Transfer, Spectral Line Width, Astrophysics, Inelastic Collisions, Velocity

Scientific paper

Starting with the recent work of Cooper et al., a suitable form of the normalized redistribution function relevant for a treatment of redistribution in the presence of velocity-changing collisions is presented. Attention is devoted to provide practical estimates of the ratio between the usual line-broadening parameters and the velocity-changing rate. It is shown that for virtually all cases of astrophysical interest the effect of velocity-changing collisions is quite negligible.

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