THE NU-1+NU-3-NU-3 HOT-BAND OF BRNO

A line-removal method is used to artificially retrieve some informatio n on weak overlapped bands in dense high-resolution spectra. This meth od consists of dividing the data - recorded with a Fourier transform s pectrometer - by the computed spectrum of the main overlapping band. I t is first demonstrated on N2O. It is then applied to the nu1 + nu3 - nu3 band of BrNO, in the region of the strong nu1 fundamental, leading to the following results: A' = 2.82506(3) cm-1, B' = 0.12596(2) cm-1 and nu0 = 1798.622(1) cm-1.