Raman study of V-centres in X-irradiated KI and RbI

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Abstract
Raman experiments were carried out on KI and RbI, X-irradiated over a range of temperature for which V-centres are created, After X-irradiation at 190 K, a Raman band was observed at 112 cm-1, assignable to the symmetric stretching vibration of an I-3 molecular ion. Another band is observed at 173 cm-1 (160 cm-1 for RbI) which could be due to "I2" molecules in a site which cannot be precised. After X-irradiation at RT of KI, the Raman spectrum is composed of two lines at 180 and 189 cm-1, probably due to large iodine aggregates

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