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Éó¸åÈËÒâ¼û£ºFigure 9. Why is the intensity ratio between the Eu (394nm) and the Sm(403nm) excitation peaks not changing with respect to the Sm concentration? If the energy transfer model is right, then for higher Sm concentrations, the Sm-based excitation peaks should increase with respect to the Eu-based excitation peaks. Even if concentration quenching becomes important, this should still be reflected in the relative peak intensities.
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