Radiation-Induced Degradation of LiF:W-Based Scintillators


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Abstract

We have studied the laws of, and reasons for, changes in the spectral and kinetic characteristics of cathodoluminescence (CL) of LiF:W scintillators irradiated by nanosecond electron pulses. It is established that the observed CL response distortions are related to the transformation of pre-irradiation defects and the accumulation of new color centers. Optimum conditions of operation of the LiF:W scintillators have been determined: preliminary exposure to a 103- to 104-Gy dose leads to a 1.5- to 2-fold increase in the CL intensity (“small-dose” effect).

About the authors

G. Ge

Tomsk Polytechnic University

Email: Korepanov@tpu.ru
Russian Federation, Tomsk, 634050

V. I. Korepanov

Tomsk Polytechnic University

Author for correspondence.
Email: Korepanov@tpu.ru
Russian Federation, Tomsk, 634050

P. V. Petikar’

Tomsk Polytechnic University

Email: Korepanov@tpu.ru
Russian Federation, Tomsk, 634050

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