Raman Spectra of Cadmium Chloride and Cadmium Bromide
The first-order lattice Raman spectra of cadmium chloride and cadmium bromide crystals were measured at room temperature on a Raman system comprising a two watt argon laser and a double monochromator. The spectra were recorded photoelectrically using conventional phase sensitive detection techniques. The Raman lines observed were assigned on the basis of a factor group analysis of the crystal structure (D3d 5). The assignments were verified from the polarization properties, and confirmed by measurements of the first and second order infrared absorption spectra. With these Raman results established, it is possible to examine transition metal ion doped cadmium chloride and bromide crystals for electronic Raman scattering effects and determine low-lying electronic levels. Preliminary measurements on such systems are discussed.
KeywordsRaman Line Cadmium Chloride Double Monochromator Factor Group Analysis Transition Metal Chloride
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