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Author Silverman, L. E. ♦ Grossweiner, L. I.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword METALS, CERAMICS, AND OTHER MATERIALS ♦ BLEACHING ♦ COLOR ♦ CRYSTALS ♦ DEFECTS ♦ ENERGY ♦ F CENTERS ♦ IRRADIATION ♦ LATTICES ♦ LIGHT ♦ POTASSIUM CHLORIDES ♦ RADIATION EFFECTS ♦ STABILITY ♦ VACANCIES ♦ X RADIATION
Abstract F centers in KCI are optically bleached at room temperature with a minimum light energy of 20.1 plus or minus 1.0 ev per F center. The F band is recovered on further roomtemperature x raying with a minimum energy of 69 plus or minus 5 ev per F center. The increase in the M and R bands during optical bleaching of the F band is nullified upon the recovery of the F band by further x raying. The recovery kinetics are of second order in the number of optically bleached F centers with a rate-constant of (7.9 plus or minus 0.8) x 10/sup -20/ cm/sup 3//F center-sec. The rate law requires an energy transfer from the bulk lattice and is consistent with an exciton mechanism. (auth)
ISSN 0031899X
Educational Use Research
Learning Resource Type Article
Publisher Date 1961-02-15
Publisher Department Illinois Inst. of Tech., Chicago
Journal Physical Review
Volume Number 121
Organization Illinois Inst. of Tech., Chicago


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