Radiation Damage in CWO Scintillation Crystals With Different Defects

Radiation Damage in CWO Scintillation Crystals With Different Defects

Results are reported on the effects of gamma-radiation upon scintillation characteristics of CdWO 4 (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 10 3 Gy caused dest...

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Veröffentlicht in:IEEE transactions on nuclear science 2009-10, Vol.56 (5), p.2983-2988
Hauptverfasser: Tupitsyna, I.A., Grinyov, B.V., Katrunov, K.A., Nagornaya, L.L., Onishchenko, G.M.
Format: Artikel
Sprache:eng
Schlagworte:
Annealing
Cadmium tungstate
Color
Crystal defects
Crystal structure
Crystals
defects
Doping
Electromagnetic wave absorption
Heating
Luminescence
Pulse measurements
radiation damage
Scintillation
scintillation crystals
Solid scintillation detectors
Stability
Testing
Trapping
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Beschreibung
Zusammenfassung:Results are reported on the effects of gamma-radiation upon scintillation characteristics of CdWO 4 (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 10 3 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 (H 2 ) or doping with Me 3+ significantly increases radiation stability of CWO.
ISSN:0018-9499
1558-1578
DOI:10.1109/TNS.2009.2027600