Optical Properties and Reorientation of
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W. C. Collins; I. Schneider
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Article
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1972
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John Wiley and Sons
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English
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## Abstract The reorientation efficiency of M centers in NaF is found to be proportional to the M^+^ concentration, suggesting that M centers reorient via an M^+^ mechanism, as in KCl. In this mechanism light is first absorbed in the higher transitions of the M centers causing them to ionize, and t