| Budget Amount *help |
¥20,670,000 (Direct Cost: ¥15,900,000、Indirect Cost: ¥4,770,000)
Fiscal Year 2010: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2009: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2008: ¥18,850,000 (Direct Cost: ¥14,500,000、Indirect Cost: ¥4,350,000)
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| Research Abstract |
We have developed novel analytical methods for the characterization of chemical states of Eu and Ce materials using highly resolved L_<γ4> emissions. Whereas the L_<γ4> emissions are very weak and hitherto neglected, we accurately obtained high-resolution (<1eV) Eu/Ce L_<γ4> emission spectra by the use of a multicrystal, multidetector spectrometer. The Eu/Ce spectra exhibited substantial differences depending on the valence state of Eu ions/on the chemical environments of the Ce ions. The applicability of the EuL_<γ4> to valence-selective XAFS spectroscopy was demonstrated through partial fluorescence yield (PFY) measurements. Possible applications of the CeL_<γ4> to the studies of charge transfers in Ce materials were suggested.
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