New hole centers in natural quartz |
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Authors: | D Maschmeyer G Lehmann |
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Institution: | 1. Institut für Physikalische Chemie, Westf?lische Wilhelms-Universit?t, Schlo?platz 4, 4400, Münster, West Germany
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Abstract: | In natural citrines five new hole centers were detected and analyzed by electron paramagnetic resonance. An additional one was observed in rose-colored quartz crystals with radiation defects as the cause of coloration. Characteristic hyperfine patterns due to an adjacent aluminum impurity were resolved in the spectra of three of these centers. Their relations to other hole centers of well-known structure in quartz and fused silica are discussed and possible models for their structures are proposed. |
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