Absorption spectra of dysprosium compounds in nonaqueous solutions. Spectral intensity analysis

Abstract

Absorption spectra of dysprosium compounds were measured in amides and D 2O within the 5500–35000 cm −1 region and in alcohols within the 7000–34300 cm −1 region. The oscillator strengths of f-f absorptions bands below 35000 cm −1 were determined. The intensities of the Dy 3+ ground state absorption were analyzed according to the Judd-Ofelt theory of forced electric dipole transitions. A good fit to the measurements was obtained with the intensity parameter given in Tables 4–6. The polarizability effect on the intensity of the f-f transition with high value matrix elements U (4) and U (6) were considered.