New rotational transitions in 14N 32S [formula omitted] detected by laser magnetic resonance at 561.3 and 618.4 μm

Abstract

New far infrared laser magnetic resonance (FIR LMR) spectra of 14N 32S ( 2Π 3 2 ) have been observed at 561.3 and 618.4 μm using DCOOD and C 2H 3Br optically pumped lasers, respectively. In the first case, the spectrum can be assigned to the rotational transition J = 10.5 → 11.5 of the ground vibrational state. In the second case, the spectrum can be attributed to the transition J = 9.5 → 10.5 in the first excited vibrational state. This is the first detection by LMR of 14N 32S vibrationally excited. The agreement between the theory and experiment confirms the spectroscopic assignments.