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Gyrotropy of crystals due to vibronic transitions with asymmetric vibrations

Journal Article · · Opt. Spectrosc. (USSR) (Engl. Transl.), v. 39, no. 4, pp. 397-399
OSTI ID:4010719
The regions of dispersion and circular dichroism of weak vibronic bands corresponding to transitions with the participation of vibrations of an asymmetric type in the absorption spectra of sodium uranyl acetate NaUO$sub 2$(CH$sub 3$COO)$sub 3$, sodium uranyl deuteroacetate NaUO$sub 2$(CD$sub 3$COO)$sub 3$, cesium uranyl propionate CsUO$sub 2$(C$sub 2$$H$$sub 5$COO)$sub 3$, and rubidium uranyl propionate RbUO$sub 2$(C$sub 2$$H$$sub 5$COO)$sub 3$ are investigated experimentally. The presence of gyrotropy and circular dichroism is detected in all the crystals studied in the bands corresponding to vibronic transitions to vibrational states of uranyl with the symmetry e*$sub 1$/subu/ ($nu$approx.260 cm$sup -1$). The size of the rotational strength of these transitions is proportional to the degree of the decrease of the symmetry of the uranyl complex from D$sub 6$/subh/ to C$sub 3$. The observed behavior of the gyrotropy and circular dichroism is explained by the presence of a vibronic interaction and by a decrease of the symmetry to C$sub 3$ of the uranyl complex in the investigated crystals. (AIP)
Research Organization:
Originating Research Org. not identified
NSA Number:
NSA-33-026845
OSTI ID:
4010719
Journal Information:
Opt. Spectrosc. (USSR) (Engl. Transl.), v. 39, no. 4, pp. 397-399, Journal Name: Opt. Spectrosc. (USSR) (Engl. Transl.), v. 39, no. 4, pp. 397-399; ISSN OPSUA
Country of Publication:
United States
Language:
English

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