The H₂–H infrared absorption bands at temperatures from 1000 K to 2500 K

The University of Texas at Austin, Physics Department, 1 University Station C1600, Austin, TX 78712-0264, USA e-mail: frommhold@physics.utexas.edu

Corresponding author: M. Gustafsson, magnus@physics.utexas.edu

Received: 31 October 2002
Accepted: 14 January 2003

Abstract

H₂–H collision-induced absorption spectra are computed for temperatures from 1000 K to 2500 K and frequencies from 100 cm^-1 to 10 000 cm^-1. The calculations are quantum mechanical and the isotropic potential approximation has been applied. The computed absorption in the fundamental band agrees roughly with the one determined by Patch (1974). However, the absorption in the translational band, which has not been obtained before, is significantly stronger than in the fundamental band.