The N2-, O2-, and air-broadened halfwidths and line mixing parameters of the N2O molecule and their temperature dependences

Abstract

Broadening and line mixing parameters for N₂-, O₂-, and air-broadened N₂O transitions in the ν₁ band are investigated over temperatures ranging of 195 to 350 K, using the Refined Robert Bonamy formalism. The theoretically predicted halfwidths show very good agreement with experimental data from the literature, leading to a reliable prediction of the rotational dependence of the temperature exponent N. Since our model yields the full relaxation matrix W, it also enables calculation of Rozenkranz line mixing parameters. Based on the reasonable agreement with available data at room temperature, the temperature dependence of the Rozenkranz parameters has been analyzed, and its physical origin is briefly discussed.