Raman Spectrum of Potassium Bromide

Abstract

POTASSIUM bromide has a crystal structure similar to that of rocksalt ; but as the ions in the former are heavier, the Raman frequency shifts are smaller and hence less easy to record in a satisfactory manner. The success of Menzies and Skinner¹ in observing some detail in the Raman spectrum of the substance, however, encouraged us to undertake an investigation having for its object a fuller elucidation of the nature of this spectrum. For this purpose it is necessary to effect a very perfect elimination of the diffuse continuum of instrumental origin overlaying the Raman lines, and also to use the highest available dispersive and resolving powers. We have paid special attention to these points in our work.