Radiation Damage in CWO Scintillation Crystals With Different Defects

Author

Tupitsyna, Irina A. ; Grinyov, Boris V. ; Katrunov, Konstantin A. ; Nagornaya, Ljudmila L. ; Onishchenko, Genadiy M.

Author_Institution

Inst. for Scintillation Mater., Nat. Acad. of Sci. of Ukraine, Kharkov, Ukraine

Volume

56

Issue

5

fYear

2009

Firstpage

2983

Lastpage

2988

Abstract

Results are reported on the effects of gamma-radiation upon scintillation characteristics of CdWO₄(CWO) single crystals with different defects. The defect structure before irradiation determines the radiation-induced changes of the CWO crystals. In some CWO samples, the dose of 10³ Gy caused destruction of defects responsible for induced absorption. Doping by Li leads to reduction of defects responsible for color and trapping centers in CWO crystals. The annealing in a reductive medium (H₂) or doping with Me³⁺ significantly increases radiation stability of CWO.

Keywords

annealing; cadmium compounds; colour centres; doping; gamma-ray detection; gamma-ray effects; lithium; solid scintillation detectors; CdWO₄:Li; annealing; color centers; doping; gamma-radiation effects; radiation damage; radiation stability; scintillation crystals; trapping centers; Annealing; Crystals; Doping; Electromagnetic wave absorption; Heating; Luminescence; Pulse measurements; Solid scintillation detectors; Stability; Testing; Cadmium tungstate; defects; radiation damage; scintillation crystals;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/TNS.2009.2027600

Filename

5280519