Spectral line profile of turbulent gas

Details Spectral line profile of turbulent gas Spectral line profile of turbulent gas

May 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apopt..26.1579z&link_type=abstract

Applied Optics (ISSN 0003-6935), vol. 26, May 1, 1987, p. 1579-1581.

Physics

Optics

Gas Spectroscopy, Spectral Line Width, Turbulence Effects, Turbulent Flow, Convolution Integrals, Doppler Effect, Stellar Atmospheres, Turbulent Wakes, Voigt Effect

Scientific paper

A simple theoretical model is proposed which makes it possible to determine the effect of the turbulent motion on the spectral line profile of a turbulent gas. The model takes into account the contribution of the macroscopic turbulent motion as well as the microscopic thermal motion to Doppler broadening, which in case of considerable Mach numbers is significant. It is shown that the spectral line profile of a turbulent gas is still a Voigt profile, which is a convolution of Lorentzian and Gaussian profiles.

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