Accession Number : AD0668016

Title :   RELAXATION OF LOCAL PERTURBATION IN A QUANTUM VIBRATIONAL SYSTEM,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Purga,A. P.

Report Date : 16 AUG 1967

Pagination or Media Count : 19

Abstract : Relaxation of local perturbation in a quantum vibrational system in harmonic approximation is examined. The relaxation of oscillatory energy in an electron-vibrational transition in the impurity center of a crystal is an example of processes of such type. General formulae describing the relaxation of state and energy, localized in the region of perturbation are obtained. In the case of a monatomic chain with isotopic defect calculations of laws of relaxation are reduced to numerical values and presented in the form of graphs. Laws of disintegration have a complex oscillatory form. The result of calculation of relaxation of mean oscillatory energy of impurity atom for the examined model will agree with results of the work of Zavt, where an analogous problem is solved by the methods of classical mechanics. (Author)

Descriptors :   (*CRYSTAL DEFECTS, RELAXATION TIME), ATOMIC ENERGY LEVELS, EXCITATION, ELECTRON TRANSITIONS, LUMINESCENCE, QUANTUM THEORY, VIBRATION, USSR

Subject Categories : Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE