Luminescence spectra fine structure for uranyl sulfate and oxalate crystals
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Quasi-line low-temperature (T = 77 and 4.2 K) luminescence spectra of uranyl sulfates and oxalates have been recorded and analyzed. It has been shown that the spectral structure is determined by the manifestation of the internal and external vibrations of both the uranyl ion and molecular groups (SO4)2– and (C2O4)2–bonded to the uranyl ion. The spectral line half-width is of the order of ≈5–7 cm–1; the line shape, close to Lorentzian. The fluorescence spectra may be complicated by structural defects in the crystals.
Keywordscrystal sulfate oxalate uranyl luminescence spectrum fine structure.
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