Fourier transform emission spectroscopy of some new bands of ReN

Abstract

The emission spectrum of ReN has been reinvestigated in the visible region using a Fourier transform spectrometer. Two new bands have been identified with band origins near 22 110 and 22 224 cm −1. These bands have a common lower state and have been assigned as the 0 +– A1 and 0 −– A1 transitions. After rotational analysis it was noted that the new 0 +– A1 transition also has its upper state in common with the upper state of the [24.7]0 +– X0 + transition reported previously [W.J. Balfour, J. Cao, C.X.W. Qian, S.J. Rixon, J. Mol. Spectrosc. 183 (1997) 113–118.]. This observation provides T 00 = 2616.26 cm −1 for the A1 state. It is likely that the A1 and X0 + states are two spin components of the 3Σ − ground state.