Radiation-Induced Degradation of LiF:W-Based Scintillators

G. Ge, V. I. Korepanov, P. V. Petikar’

Division for Materials Science

Research output: Contribution to journal › Article

Abstract

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).

Original language	English
Pages (from-to)	714-717
Number of pages	4
Journal	Technical Physics Letters
Volume	45
Issue number	7
DOIs	https://doi.org/10.1134/S1063785019070216
Publication status	Published - 1 Jul 2019

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Keywords

cathodoluminescence
defects
LiF:W scintillators
radiation-induced degradation

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

Cite this

Ge, G., Korepanov, V. I., & Petikar’, P. V. (2019). Radiation-Induced Degradation of LiF:W-Based Scintillators. Technical Physics Letters, 45(7), 714-717. https://doi.org/10.1134/S1063785019070216

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AB - 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).

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Access to Document

10.1134/S1063785019070216