ARGON-BROADENED CO2 LINEWIDTHS AT HIGH J-VALUES

We present experimental collision-broadening coefficients at high J va lues obtained in the nu(3) bond of CO2 pressurised by argon. They were determined by Fourier transform spectroscopy at room temperature for pressures up to 2 atm. We review recent experimental and theoretical d ata and compare them with calculations performed by using the energy c orrected sudden (ECS) approximation. The present extended measurements allow a better determination of the basic parameters which are requir ed to model the line coupling induced by collision within this formali sm. (C) 1998 Elsevier Science B.V.