Accession Number:

AD0261714

Title:

FORMATION AND OPTICAL BLEACHING OF F CENTERS IN X-RAYED POTASSIUM CHLORIDE CRYSTALS

Descriptive Note:

Corporate Author:

OREGON STATE UNIV CORVALLIS

Personal Author(s):

Report Date:

1961-07-15

Pagination or Media Count:

1.0

Abstract:

Single crystals of potassium chloride were grown from aqueous solution. X-ray darkenability and optical bleaching rate of F centers were measured at room temperature and the rate expressions were obtained experimentally for the processes. X-ray darkenability was also studied in crystals containing secondary centers, such as M, R, and N centers, which were produced by the preceding optical bleaching of F centers. Upon x-ray irradiation, F centers formed rapidly with the sudden decrease of the secondary centers. The same rate expression as that obtained for the F-center formation in virgin crystals is also applicable to this process. In this case the rate of F-center formation is dependent on the number of F centers bleached by the preceding optical bleaching but not on the kind of crystals. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE