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Showing 1 to 2 of 2 for “"negative ion vacancy"”.
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The U center in potassium bromide crystals
… 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 ways: either by warming the crystal to lo6°K or by irradiating with monochromatic light in the Ul band. This component of the ut band was interpreted …
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Influence of applied uniaxial stress upon the ultraviolet absorption bands in KBr and KI
… of uniaxial stress upon three types of imperfections occurring in the alkali halide crystal lattice has been investigated. The imperfections are the interstitial atom, the interstitial ion, and the negative ion vacancy. The interstitial atom, or H center, is a paraelastic defect which assumes a …