Abstract
SOME time ago, my co-workers and I 1 found that the well-known blue fluorescence band of some fluorites is due to traces of bivalent europium. In later papers2, I showed that europium can easily be reduced to the bivalent form by heating in various basic materials.
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Haberlandt, H., Karlik, B., and Przibram, K., Wien. Ber., IIa, 143, 151 (1934).
Przibram, K., (a) Wien. Ber., IIa, 144, 141 (1935); (b) ibid., 147, 261 (1938).
Freed, S., and Katcoff, S., Physica, 14, 17 (1948).
Przibram, K., Z. Phys., 102, 331 (1936).
Przibram, K., Wien. Anz., 98 (1946). In this paper ref. 2 ought to read : Nichols, E. L., and Boardman, L. J., J. Opt. Soc. Amer., 20, 115 (1930).
Compare also Przibram, K., ref. 2(b).
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PRZIBRAM, K. The Light Emitted by Europium Compounds. Nature 163, 989 (1949). https://doi.org/10.1038/163989a0
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DOI: https://doi.org/10.1038/163989a0
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