TEMPERATURE-DEPENDENT INTENSITIES AND WIDTHS OF N-2-BROADENED CO2 LINES AT 15-MU-M FROM TUNABLE LASER MEASUREMENTS

Intensities and half-widths of individual lines in the 15 μm bands of 12C16O2 have been determined over the temperature range 200-325 K in an extension of work previously reported. Measurements were made on dilute Co2-N2 mixtures with a tunable IR diode laser spectrometer on the Q-branches of the 0110-0000 and the 0220-0110 transitions. Measured intensities are consistently lower than those available in the literature, which were derived from measurements using other than diode laser techniques. Measured half-widths follow the general relationship bL0(T) = bL0(T0)[T0/T]n, where n shows considerable variations for the two tr ansitions. The results presented here include an improved analysis of half-width data previously discussed by the authors and also additional data obtained over a broader temperature range. © 1979.