Collisional Broadening of CO2 1000–0001 Transition Lines by O2 and N2 in the Range 300–700 K

Unsaturated absorption coefficients are measured using a tunable CO 2 laser in pure CO 2 and CO 2 :O 2 = 1:2 and CO 2 :N 2 = 1:2 gas mixtures at the central frequencies of the R( 8 ), R(22), P( 8 ), P(22), and P(36) CO 2 10 0 0–00 0 1 transition lines under a pressure of 100 Torr in the temperature range 300–700 K. The collisional broadening coefficients of the CO 2 spectral lines by O 2 and N 2 are obtained. The temperature dependences of these coefficients are approximated by power functions with two different exponents.