Investigation of C–O Stretching Band of CD3OH: Assignments of Far-Infrared Laser Lines

Abstract

We have investigated the high-resolution Fourier transform spectrum of the C–O stretching fundamental band of CD3OH in order to assign far-infrared (FIR) laser transitions. The absorption spectrum was analyzed by means of the “Ritz” program, which calculates the energy level values directly from the Rydberg–Ritz combination principle. We have also used the “LaseRitz” program to facilitate the assignment of the FIR laser lines. As a consequence we could determine 12 new assignments, confirming 4 previously proposed ones and predicting new FIR laser emissions.