Light-induced phenomena in one-component gas: Pressure anisotropy and change of gas temperature

Abstract

The phenomena of pressure anisotropy and radiative temperature change in a one-component gas in a field of resonant laser radiation are investigated. This is a continuation of the work by Chermyaninov and Chernyak [“Light-induced phenomena in one-component gas: The transport phenomena,” Phys. Fluids 28, 092007 (2016)]. A model of a limitless gas, and a gas between infinite parallel plates at large Knudsen (Kn ≫ 1) numbers are considered. The mechanisms of these phenomena are discussed. Expressions for the components of the pressure tensor and the change of gas temperature are obtained. Numerical estimates of these effects are provided for the case of the inhomogeneous broadening of the absorption line.