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    Divalent rare-earth ions Pr, Sm, Нo, Er, Tm, and Yb in crystals of alkaline-earth fluorides

    The absorption spectra of radiation-colored CaF2, SrF2, and BaF2 crystals activated by trivalent Pr, Sm, Нo, Er, Tm, and Yb (rare-earth, RE) ions are studied. It is shown that ionizing radiation reduces the impur...

    T. Yu. Sizova, V. Yu. Veslopolova in Bulletin of the Russian Academy of Science… (2017)