Abstract
The Stark structure of multiplets and the oscillator strengths of absorption transitions in Pr3+ ions in a Y3Al5O12 crystal have been described with allowance for the effect of the excited opposite-parity configuration and the charge-transfer configuration. To take into account this effect, a modified crystal-field Hamiltonian and an effective line-strength operator for intermultiplet electric-dipole transitions are proposed. Their use in description of experimental data makes it possible to decrease the standard deviation by 37 and 20%, respectively, in comparison with the standard theories. The even-and odd-crystal-field parameters and the covalence parameters have been obtained from the description of Stark levels. The intensity parameters calculated on the basis of the covalence parameters and odd-crystal-field parameters are in satisfactory agreement with the parameters obtained from the description of the experimental oscillator strengths.
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Original Russian Text © L.A. Fomicheva, A.A. Kornienko, E.B. Dunina, 2008, published in Optika i Spektroskopiya, 2008, Vol. 105, No. 3, pp. 364–369.
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Fomicheva, L.A., Kornienko, A.A. & Dunina, E.B. Self-consistent description of the Stark structure of multiplets and intensities of absorption transitions in Pr3+ ions in Y3Al5O12 . Opt. Spectrosc. 105, 333–338 (2008). https://doi.org/10.1134/S0030400X08090026
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DOI: https://doi.org/10.1134/S0030400X08090026