Fluorescence of europium tris(bromate) enneahydrate with Ar+ laser excitation.
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概要
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The (<I>f</I>,<I>f</I><SUP>*</SUP>) transitions of europium tris(bromate) enneahydrate crystal between 12000 and 20000 cm<SUP>−1</SUP> were measured at 95 K by laser-excited fluorescence spectroscopy. The crystal field components of the ground (<SUP>7</SUP>F<SUB>0.1···6</SUB>) and the excited states (<SUP>5</SUP>D<SUB>0.1</SUB>) participating in the transitions were analyzed in terms of the tensor-operator method. Besides electric-dipole transitions, a number of magnetic-dipole transitions were detected in compliance with the selection rule. The theory could reproduce the observed wavenumbers and intensities both for the σ- and π-transitions. The population ratio of the <SUP>5</SUP>D<SUB>0</SUB> to the <SUP>5</SUP>D<SUB>1</SUB> was estimated to be 14.1 from the intensity calculations and the observed results. The result suggests that mixing of <I>g</I>-orbitals is significant for the forced electric-dipole transitions.
- 公益社団法人 日本化学会の論文
著者
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Kato Yoshifumi
Department Of Engineering Mathematics Faculty Of Engineering Nagoya University
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Okada Keiko
Department of Chemistry, Faculty of Science, Kobe University
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Hasunuma Masahiko
Department of Chemistry, Faculty of Science, Kobe University
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