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Showing 1 to 1 of 1 for “"secondary bands"”.
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The U center in potassium bromide crystals
… at 78°K has been investigated. The nature of the secondary bands, the U' and the Ul bands, was studied. The U' band consisted of component bands, including the a band which is due to exciton transitions near a negative ion vacancy. One component of the U' band is bleached readily in either of two …