|Author||Silverman, L. E. ♦ Grossweiner, L. I.|
|Source||United States Department of Energy Office of Scientific and Technical Information|
|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)|
|Learning Resource Type||Article|
|Publisher Department||Illinois Inst. of Tech., Chicago|
|Organization||Illinois Inst. of Tech., Chicago|
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