Letter | Published:

Fluorescence of Tungstates and Molybdates

Nature volume 159, pages 674675 (17 May 1947) | Download Citation



THE tungstates of calcium, strontium, magnesium and zinc, and the molybdates of calcium are known to show luminescence upon excitation by cathode rays or short-wave ultra-violet radiation. It is commonly assumed that this luminescence is characteristic of the tungstate and molybdate groups. If this is true, there must be a reason why other tungstates and molybdates are found to be non-luminescent. Studying a number of different tungstates and molybdates in this Laboratory, we have found this reason to be the temperature-quenching.

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  1. 1.

    , cited by , Ergeb. Exakt. Naturw., 20, 221 (1942). , Trans. Farad. Soc., 42, 666 (1946).

  2. 2.

    , "Some Aspects of the Luminescence of Solids" (Elsevier Publishing Co., Amsterdam and New York, 1947), in the press.

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  1. Natuurkundig Laboratorium der N. V. Philips' Gloeilampenfabrieken, Eindhoven. Feb. 21.

    • F. A. KRÖGER


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