Accession Number : AD0695883

Title :   THE THEORY OF RAMAN SCATTERING BY IMPURE CRYSTAL. THE RESONANCE CASE,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Tekhver,I. Yu.

Report Date : 03 DEC 1968

Pagination or Media Count : 19

Abstract : The resonance Raman spectrum of an impure crystal is analyzed in the adiabatic and Condon approximations with allowance for the anharmonicity of the lattice vibrations but neglecting variations in force constants in various electron states. The spectral intensities are calculated for two cases: (1) the incident light frequency omega being in the region of pure-electron transition and (2) omega falling in the region of the phonon wing, assuming the Stokes-shifts are appreciable. In the latter case, a quasi-linear structure of the spectrum may be observed, which makes it possible to use the resonance Raman spectra for studying the dynamics of impurity centers with appreciable Stokes-shifts.

Descriptors :   (*IMPURITIES, *RAMAN SPECTROSCOPY), RESONANCE, CRYSTAL DEFECTS, BAND THEORY OF SOLIDS, USSR

Subject Categories : Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE