Abstract
The absorption spectrum of gaseous hydrogen bromide has been photographed in the region 1180 to 1500 Å, using fourth and fifth orders of a 3 m grating. About forty bands have been observed. The resolving power sufficed for the study of most of the discrete rotational structure. The analysis reveals that few of the bands are related in vibrational progressions and shows rather that they are to be associated with atleast thirty new electronic states.

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