Abstract

A simple criterion is derived in terms of molecular parameters to determine whether collisional narrowing is of importance in determining the equivalent widths of spectral lines of any combination of emitting and broadening gases. The criterion is verified by numerical integration, and a simple formula is given for the maximum error obtained when the Voigt profile is used as an approximation to the Galatry profile.

© 1976 Optical Society of America

Collisional narrowing effects on spectral line shapes measured at high resolution

Philip L. Varghese and Ronald K. Hanson
Appl. Opt. 23(14) 2376-2385 (1984)

Calculations of Collision Narrowing of the Quadrupole Lines in Molecular Hydrogen

Thomas C. James
J. Opt. Soc. Am. 59(12) 1602-1606 (1969)

Galatry profile convolved with the Fabry-Perot instrument function

David Goorvitch
Appl. Opt. 16(6) 1732-1735 (1977)

Line parameter variations and the profile dependence of atmospheric transmittance

R. L. Armstrong
Appl. Opt. 17(13) 2103-2106 (1978)

Analytic approximations to the Fowler-Sung line shape

Eusebio Bernabeu, J. J. Trujillo, and J. M. Alvarez
Appl. Opt. 23(19) 3373-3381 (1984)