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Low lying resonant band modes in CsBr and CsI crystals doped with In+ and Tl+

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Prettl, Wilhelm ; Siep, E.
Date of publication of this fulltext: 26 Oct 2010 12:36


Measurements of the far infrared absorption due to In+ and Tl+ impurities in CsBr and CsI single crystals yielded low frequency resonances with narrow linewidths at 11.0 cm−1 in CsBr:In+, 12.0 cm−1 in CsI:In+, 14.1 cm−1 in CsI:Tl+, and 16.95 cm−1 in CsBr:Tl+. The frequencies of the resonant band modes in the Tl+ doped crystals shift to higher values with increasing temperature. Using a model of ...


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