Vol. 24, issue 11, article # 3

Abstract:

The results of theoretical study of the HF first overtone vibration-rotational absorption spectral line profile (the transition 0-2 R(0), broadened by Ar (mixture HF : Ar = 1 : 150, Т = 295°K, Р = 10-300 Torr) are presented. Generalized model of Ciurylo, Pine, and Szudy for the spectral line profile was selected for our study of different physical mechanisms influencing spectral line shape. The shortcomings of the indicated model are revealed by the way of validation of its basic assumptions using method of classical trajectories. Special consideration is given to the elucidation of the nature of anomalous asymmetry of the HF spectral line shape.

Keywords:

collisional broadening, generalized model of spectral line profile, classical trajectory method, line profile asymmetry, correlations parameters