Accession Number : AD0678304

Title :   PARAMAGNETIC RESONANCE OF IRRADIATED LITHIUM HYDRIDE LUMINESCENT CRYSTALS,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Shulgin,B. V. ; Gavrilov,F. F. ; Dvinyaninov,B. I. ; Koryakov,V. I. ; Chirkov,A. K.

Report Date : 26 JAN 1968

Pagination or Media Count : 9

Abstract : The dependence of the intensity and width of the absorption line of the EPR on temperature was investigated in irradiated lithium hydride luminescent crystals. The irradiation was done at room temperature with the unfiltered light of an SVD-120 mercury lamp and betatron electrons with energies of 8 to 10 MeV. The temperature dependence of the intensity and width of the EPR absorption line of LiH crystals with blue luminescence undergoes a sharp change in the temperature range from 90 to 120C. The first maximum on the thermoluminescence curve is also observed in this range. This coincidence occurs because the centers of the electron capture in LiH responsible for the first thermoluminescence peak are bound with the colloidal lithium. The release of electrons from the capture level corresponding to the first thermoluminescence peak causes the elimination of these absorption centers. As a result, the intensity of the paramagnetic absorption line decreases and the width increases due to the absorption by the color centers. (Author)

Descriptors :   (*LITHIUM COMPOUNDS, *PARAMAGNETIC RESONANCE), HYDRIDES, LUMINESCENCE, LINE SPECTRA, COLOR CENTERS, RESONANCE ABSORPTION, USSR

Subject Categories : Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE