Probe Raman Spectroscopy of Uranyl-Compound Polycrystals

Abstract

Regularities in the Raman spectra of acetate uranyl compounds CsUO₂(CH₃COO)₃, CsUO₂(CD₃COO)₃, NaUO₂(CH₃COO)₃, NaUO₂(CD₃COO)₃, UO₂(CH₃COO)₂, and RbUO₂(CH₃COO)₃ have been analyzed. The Raman spectra are excited by 785-nm laser radiation and recorded using a miniature fiber-optic spectrometer with a multielement detector. It is established that the spectra of all these compounds contain a strong Raman satellite with a frequency in the range of 850–860 cm^–1. This satellite corresponds to symmetric stretching vibrations (type A₁) of the uranyl group. The obtained results make it possible to detect and analyze small amounts of uranyl compounds.