Temperature dependence of radiation hardness of lead tungstate (PWO) scintillation crystals

被引：8

作者：

Burachas, S. ^{[2
]}

Ippolitov, M. ^{[2
]}

Manko, V. ^{[2
]}

Nikulin, S. ^{[2
]}

Vasiliev, A. ^{[2
,4
]}

Apanasenko, A. ^{[3
]}

Vasiliev, A. ^{[2
,4
]}

Uzunian, A. ^{[4
]}

Tamulaitis, G. ^{[1
]}

机构：

[1] Vilnius Univ, Inst Appl Res, LT-10222 Vilnius, Lithuania

[2] RRC Kurchatov Inst, Moscow, Russia

[3] Kharkov Univ, Kharkov, Ukraine

[4] Inst High Energy Phys, Protvino, Russia

来源：

RADIATION MEASUREMENTS | 2010年 / 45卷 / 01期

关键词：

Scintillators; Lead tungstate; Radiation detectors; Radiation hardness; ELECTROMAGNETIC CALORIMETER; VARIABLE COMPOSITION; TRANSMITTANCE; IMPROVEMENT; COLORATION; ORIGIN;

D O I：

10.1016/j.radmeas.2009.11.038

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

Influence of irradiation on the light yield of PWO (lead tungstate, PbWO4) scintillation crystals was studied in the temperature range from -25 degrees C to +60 degrees C. Light output and optical transmittance were simultaneously measured as a function of time under irradiation in PWO single crystals grown in first and second recrystallization cycle of raw material, doped with different lanthanides and annealed in different conditions. Increased sensitivity to irradiation and slower recovery of the initial light yield were observed at decreased temperatures. The model of tungsten oxide clusters in a regular PWO lattice is used to interpret the experimental results, and dynamics of the light yield under irradiation at different temperatures are qualitatively explained using rate equations describing composition changes in the clusters. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：83 / 88

页数：6

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