Recombination luminescence in KI-Tl phosphor |
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Authors: | I. A. Parfianovich V. G. Krongauz |
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Affiliation: | (1) Zhdanov Irkutsk State University, USSR |
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Abstract: | The X-ray luminescence and the optical scintillation of certain specimens of KI-Tl with varying activator content when excited by X-ray radiation at T=105 ° K were studied. The temperatute dependence of the brilliance of scintillation and luminescence measured under pulse conditions was found to be complex, and in the temperature range 105 °–240 ° K a series of alternating increases and decreases in these values was observed. At the same time a definite parallelism was found in the changes in brilliance of the luminescence and the scintillation. An increase in brilliance of specimens excited at 105 ° K after heating up to 133 ° K was observed and investigated. The regularities found are explained by the redistribution of hole centers. The data obtained confirm the importance of the part played by the electron-hole mechanism in the migration of the energy of the basic material to the centers of luminescence in KI-Tl phosphor. |
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