Accession Number : AD0658649

Title :   ELECTRON PARAMAGNETIC RESONANCE OF CERTAIN COLOR CENTERS IN ALKALI-HALIDE CRYSTALS,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Bugai,A. A. ; Ruban,M. A. ; Shatalov,A. A.

Report Date : 23 JAN 1967

Pagination or Media Count : 13

Abstract : KCl crystals with a concentration of 5.10 to the 16th power to 2.10 to the 17 power/cu. cm. F-centers were split in halves. The EPR of the original half, used as a standard, exhibited a strong signal with a signal-noise ratio of 100. In the second half the F-centers were destroyed by optical and thermal treatment, and F2 centers formed. EPR in these specimens was absent. Hyperfine structure of EPR lines of F-centers in KCl was observed at 20.4K. The average splitting was approx. 9, which was higher than the 7.72 observed by Feber. St 77K, the hyperfine structure dissappeared. The half-width of the lines at 77 and 20.4K was 58 and 60 oe respectively. Apparently, the EPR lines did not narrow in the range 300-20.4K. (Author)

Descriptors :   (*COLOR CENTERS, *PARAMAGNETIC RESONANCE), ALKALI METAL COMPOUNDS, HALIDES, POTASSIUM COMPOUNDS, CHLORIDES, HYPERFINE STRUCTURE, SODIUM CHLORIDE, USSR

Subject Categories : Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE