Optika Atmosfery i Okeana Journal

Vol. 8, issue 04, article # 8

Starikov V. I. Approximation formulas for spectroscopic parameters of slightly asymmetric molecules with internal rotation. // Atmospheric and oceanic optics. 1995. V. 8. No. 04. P. 560-568. PDF
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Abstract:

Expressions for spectroscopic parameters a_m(K) determining rotational energy of a molecule have been derived for slightly asymmetric molecules with internal rotation. These expressions depend on a solution of the Schro"dinger equation that takes into account the periodicity of the potential function and strong interaction between internal and external rotation. It has been suggested that the solution of this equation for its eigenvalues be sought as a ratio of the Fourier series in the rotational quantum number K. The expressions for a_m(K) have been applied to the CH₃OH molecule with triad rotational axis.