The effect of radiation damage on optical and scintillation properties of BGO crystals grown by the LTG Cz technique

BGO crystals grown by the low-thermal-gradient Czochralski technique (LTG Cz) exhibit two distinct types of behavior upon radiation damage and recovery. The crystals termed as of L-type remain colorless after γ-radiation doses as high as 10 Mrad. As the irradiation dose increases the scintillation l...

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Bibliographic Details
Published in:	Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Vol. 486; no. 1; pp. 350 - 354
Main Authors:	Gusev, V.A, Ivannikova, N.V, Kupriyanov, I.N, Kuznecov, G.N, Shlegel, V.N, Antsygin, V.D, Vasiliev, Ya.V
Format:	Journal Article
Language:	English
Published:	Elsevier B.V 21-06-2002
Subjects:	BGO Light output Optical transmission Radiation damage Recovery 29.40.Mc 78.20.−e Optical transmission 61.80.−x BGO Recovery Radiation damage Light output
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Summary:	BGO crystals grown by the low-thermal-gradient Czochralski technique (LTG Cz) exhibit two distinct types of behavior upon radiation damage and recovery. The crystals termed as of L-type remain colorless after γ-radiation doses as high as 10 Mrad. As the irradiation dose increases the scintillation light output shows a weak monotonous degradation to 15–25%, saturating at around several hundreds krad doses. The crystals termed as of N-type attain yellow coloration after irradiation. The light output drops abruptly for 35–50% as early as after 1 krad and does not change further on. The present work is devoted to the study of radiation damage effects, self-recovery, optically stimulated recovery and thermo-stimulated current in the L- and N-type BGO crystals produced by LTG Cz.
ISSN:	0168-9002 1872-9576
DOI:	10.1016/S0168-9002(02)00732-5