M Cacciatore et al 2004 J. Phys. B: At. Mol. Opt. Phys. 37 3379 doi:10.1088/0953-4075/37/16/013
M Cacciatore1, A Kurnosov2, A Napartovich2 and S Shnyrev2
Show affiliationsThe rate constants for multiquantum vibration-to-vibration (V-V') energy exchanges in CO(v)–N2(v') collisions, with CO in highly excited vibrational levels v and N2 in the first few low-lying vibrational levels, were obtained from ab initio semiclassical calculations. A large temperature interval was explored, T = 100–500 K, while the vibrational quantum numbers v and v' were in the range v = (30–44) and v' = (0–3). The role played by these collisional processes in the vibrational kinetics of CO:Ar/He:N2 gas mixtures under typical laser conditions were explored in detail by using a recently developed kinetic modelling procedure. In particular, it was found that the V-V' exchanges between CO and N2 exert an essential influence on the time evolution of the vibrational population and on the associated small signal gain and spectral characteristics of the CO laser in both the fundamental and overtone bands.
33.15.Mt Rotation, vibration, and vibration-rotation constants
Issue 16 (28 August 2004)
Received 10 March 2004
Published 9 August 2004
M Cacciatore et al 2004 J. Phys. B: At. Mol. Opt. Phys. 37 3379
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