INFRARED-EMISSION SPECTRUM OF ALBR

An infrared emission spectrum of the DELTAv = 1 bands of AlBr has been observed with a Fourier transform spectrometer with 0.1 cm-1 resoluti on. The v = 1-0 to 3-2 and v = 5-4 vibration-rotation bands of (AlBr)- Br-79 and the v = 1-0 to 5-4 bands of (AlBr)-Br-81 were assigned in th e wavenumber range between 310 and 400 cm-1. The infrared data combine d with millimeter-wave data from the literature were analyzed with a l east-squares fit to a Dunham potential function with only seven parame ters. Thirteen Dunham Y(ij) coefficients have been derived for each of the isotopic species.