Accession Number : AD0761416

Title :   The R' Center in LiF: An Optical Study of a Jahn-Teller Distorted System.

Descriptive Note : Doctoral thesis,

Corporate Author : CORNELL UNIV ITHACA N Y MATERIALS SCIENCE CENTER

Personal Author(s) : Davis,Jeffery Arthur

Report Date : JAN 1970

Pagination or Media Count : 136

Abstract : A series of experiments are described in which the optical absorption and emission spectra of the R' center in LiF at low temperatures are perturbed by applied electric, magnetic, and uniaxial stress fields to determine the structure of the center and the effects of Jahn-Teller distortion in its excited state. The magnetic circular dichroism and linear Stark splitting observed for the 8328 A zero-phonon line confirm that the R' center has C(3v) symmetry and that this transition is 3A2 to 3E, as expected for the model of a triangle of three F centers with one extra trapped electron. (Modified author abstract)

Descriptors :   (*LITHIUM FLUORIDES, COLOR CENTERS), ABSORPTION SPECTRA, BAND THEORY OF SOLIDS, MOLECULAR ENERGY LEVELS, ELECTRON TRANSITIONS, PHONONS, WAVE FUNCTIONS, EXPERIMENTAL DESIGN, THESES

Subject Categories : Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE