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  1. 1 Open Physics

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  1. 1 2008

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  1. 1 Dunina E.

  2. 1 Fomicheva L.

  3. 1 Kornienko A.

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Modified theory of f-f transition intensities and crystal field for systems with anomalously strong configuration interaction

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Dunina E., Kornienko A., Fomicheva L.
Open Physics
|
2008
|
vol. 6
|
issue 3
407-414
EN
A new theory explaining the intensity of f-f transitions and the crystal field using an approximation of a strong configuration interaction is proposed. The theory enables the anomalous influence of excited configurations with charge transfer on some multiplets of the f shell to be taken into account. With the help of this theory, a satisfactory description of the absorption transitions and luminescence branching ratios from 1 D 2 and 3 P 0 multiplets for the Pr3+ ion in double molybdates has been achieved for the first time. For further validation the theory, was used to provide a description of Stark splitting of Pr3+ - multiplets in elpasolites and determine the covalence parameters; these parameters were found to be in good agreement with values obtained by the other methods.
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