FAR-INFRARED PERMANENT AND INDUCED DIPOLE ABSORPTION OF DIATOMIC-MOLECULES IN RARE-GAS FLUIDS .2. APPLICATION TO THE CO-AR SYSTEM

The general theory of far-infrared absorption of diatomic molecules in rare-gas fluids reported in Paper I is applied to the case of the CO- Ar system. The experimental absorption profiles of CO in Ar at three d ifferent densities (low-density gas, high-density gas, and liquid) are theoretically reproduced by considering the permanent dipole contribu tion and the four leading electrostatic multipole-induced dipole contr ibutions. From these results an estimation of the quadrupole, \theta\, octupole, \Omega\ and hexadecapole, \Phi\, moments of CO is given. (C ) 1995 American Institute of Physics.