Letter | Published:

Luminescence Processes in Zinc Sulphide Phosphors

Nature volume 158, pages 704705 (16 November 1946) | Download Citation



IN a recent communication in Nature1, derivations of phosphorescence decay equations have been made, based on the electron trapping mechanism, which assume retrapping of electrons to be an important part of the process. The writers direct attention to two statements from papers by Randall and Wilkins2 which, when thus isolated from their context, appear to contradict each other. Klasens and Wise assume in their letter that electron traps and luminescence impurity centres are independent of each other. Their subsequent theoretical treatment of the decay process is based on the above assumptions.

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  1. 1.

    , and , Nature, 158, 483 (1946).

  2. 2.

    , and , Proc. Roy. Soc., A, 184, 366 and 390 (1945).

  3. 3.

    , Nature, 158, 306 (1946).

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  1. Physics Department, University of Birmingham. Oct. 5.

    • G. F. J. GARLICK
    •  & A. F. GIBSON


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