Spectral behavior of the absorption coefficient in the 4.3-micron CO2 band over a wide range of temperatures and pressures

Experimental data on the carbon dioxide absorption coefficient under conditions of self-broadening and broadening by nitrogen in microwindows and beyond the edge of the CO2 4.3-micron band in the temperature range 193-771 K at pressures from normal to 60 Amagat are examined in the context of the line wing theory. It is shown that the totality of the data can be accurately described in terms of this theory with allowance for the temperature dependence of the intermolecular interaction potential. The advantages and disadvantages of other theoretical approaches to the description of spectral line wings are discussed.