Radiation-Induced Degradation of LiF:W-Based Scintillators

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

Keywords

cathodoluminescence
defects
LiF:W scintillators
radiation-induced degradation

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

Access to Document

10.1134/S1063785019070216

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title = "Radiation-Induced Degradation of LiF:W-Based Scintillators",

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).",

keywords = "cathodoluminescence, defects, LiF:W scintillators, radiation-induced degradation",

author = "G. Ge and Korepanov, {V. I.} and Petikar{\textquoteright}, {P. V.}",

year = "2019",

month = jul,

day = "1",

doi = "10.1134/S1063785019070216",

language = "English",

volume = "45",

pages = "714--717",

journal = "Technical Physics Letters",

issn = "1063-7850",

publisher = "Maik Nauka-Interperiodica Publishing",

number = "7",

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TY - JOUR

T1 - Radiation-Induced Degradation of LiF:W-Based Scintillators

AU - Ge, G.

AU - Korepanov, V. I.

AU - Petikar’, P. V.

PY - 2019/7/1

Y1 - 2019/7/1

N2 - 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).

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).

KW - cathodoluminescence

KW - defects

KW - LiF:W scintillators

KW - radiation-induced degradation

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DO - 10.1134/S1063785019070216

M3 - Article

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EP - 717

JO - Technical Physics Letters

JF - Technical Physics Letters

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