Satellites in Infrared and Raman Spectra of Linear Molecules
A nonMarkov theory of diffuse satellites appearing around the allowed resonance rotational lines perturbed by monoatomic buffer gases is expounded. As the buffer-gas pressure grows, the lorentzian mother lines adjacent to the band origin become attenuated because of the intensity transfer to surrounding satellites. Different channels contributing to the attenuation effect of infrared and Raman lines of linear molecules are considered. The calculated attenuation coefficients reasonably agree with experimental data available for HCl and HF absorption spectra perturbed by noble gases [1-3]. .Based on the nonMarkov dynamical theory, the satellite formation in the allowed spectra of dense media consisting of linear molecules is treated. In this case, coupling of the rotational transitions in neighbouring molecules results in the appearance of satellites at the combination frequencies.
Support from the Russian Foundation for Basic Research (grant 19-03-00830) is gratefully acknowledged.
 E. Piollet-Mariel, C. Boulet, and A. Levy, J. Chem. Phys. 1981, 74, 900.
 C. Boulet, P.-M. Flaud, and J.-M. Hartmann, J. Chem. Phys. 2004, 120, 11053.
 A. P. Kouzov, K. G. Tokhadze, and S. S. Utkina, Eur. Phys. J. D 2000, 12, 153.