Pressure Broadening of Linear Molecules. II. Theory

Abstract

The large collision diameters for the self pressure broadening of OCS and BrCN can be explained in terms of P. W. Anderson's general theory as due to the first order dipole-dipole interaction. The temperature dependence of the pressure broadening requires the introduction of other interactions. It is possible to obtain both the magnitude and temperature dependence of the pressure broadening by considering both the first order dipole-dipole and quadrupole-dipole interactions.