Abstract
The absorption spectrum of the 3Π0+u–1Σ+g system of bromine between 6200 and 5100 A has been photographed at high resolution using each of the separated isotopic species 79Br2 and 81Br2. A rotational analysis of ten bands of each isotopic species has been carried out. The accepted vibrational numbering was confirmed. The constants obtained (cm–1) for each species are:- [graphic omitted]. Revised constants for the most abundant isotopic species 79 81Br2 have been calculated. The last four bands immediately preceding the onset of the continuum have also been analyzed for each species. A limiting curve of dissociation has been plotted in each case leading to an average value for D0(79 81Br2) of 15,893.1 ± 1.0 cm–1.
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