A Note on Rotational Line Strengths in Slightly Asymmetric Rotors

摘要

Directionhyphen;cosine matrix elements for slightly asymmetric rotors are calculated by a secondhyphen;order perturbation treatment around the limiting symmetric rotor. This permits evaluation of the line strengths which are involved in calculations of absorption intensities, Stark effects, and nuclearhyphen;quadrupole couplings in rotational spectra. Explicit formulas are derived for the firsthyphen;order terms.