Infrared radio-frequency double-resonance spectroscopy has been carried out for 13CH3OH. Four K-type doublet transitions have been observed below 1 GHz, using the 9P(10) and 9P(12) CO2 laser lines. The results confirm previously proposed assignments of infrared absorption transitions and far-infrared laser emission lines observed in this molecule. Measurements of the A-state splittings have permitted the determination of the asymmetry splitting parameters SO(K) and SCO(K) for (n, K) = (0, 4) and (1, 3).
© 1987 Optical Society of America
J. C. Petersen, "Infrared radio-frequency double resonance of 13CH3OH," Opt. Lett. 12, 471-473 (1987)