Radiation damage of PbWO4 crystals due to irradiation by 60Co gamma rays

被引：35

作者：

Kozma, P

Bajgar, R

Kozma, P

机构：

[1] Inst Tech Invest, Prague 25163, Czech Republic

[2] Oregon Grad Inst Sci & Technol, Portland, OR 97291 USA

来源：

RADIATION PHYSICS AND CHEMISTRY | 2002年 / 65卷 / 02期

关键词：

lead tungstate (doped and undoped) scintillators; gamma-ray iradiations; optical transmission; radiation damage; recovery of damaged crystals;

D O I：

10.1016/S0969-806X(02)00217-7

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Radiation resistivity of large tungstate crysta(l)s PbWO4 from three suppliers has been studied for doses 10(4) Gy (10(6) rad) and 10(5) Gy (10(7) rad). Radiation resistivity was examined by the measurement of optical transmission through tungstate crystals before and after Co-60 gamma-ray irradiations. The absolute degradation of transmission for 10(4) and 10(5) Gy doses at 480 nm wavelength of the peak emission of PbWO4 doped with La2+, was found to be lower than 12.3% and 14.2%, respectively. The results have been also compared with radiation hardness measurements for a large volume CeF3 scintillation crystal. Complete recovery of radiation damage was observed between 10 and 15 days after irradiations. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：127 / 130

页数：4

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