Linewidth measurements in the thermal infrared bands of ^12CH_3D at planetary atmospheric temperatures

Abstract

Collision-broadened halfwidths of three lines in thenu(3) fundamental band and of four lines in the nu(6) fundamental band of (12)CH(3)D have been measured at temperatures between 123 and 295 K using the Dopplerlimited spectral resolution of a tunable diode laser spectrometer. Temperature dependence of the linewidths has been determined in self-broadening and in broadening by H(2), He, and N(2).