Photo-transfer thermoluminescence and thermal quenching in CaSO4:Dy

✍ Scribed by A.S. Pradhan; R.C. Bhatt

• Publisher: Elsevier Science
• Year: 1985
• Tongue: English
• Weight: 281 KB
• Volume: 10
• Category: Article
• ISSN: 0735-245X
• DOI: 10.1016/0735-245x(85)90016-x

✦ Synopsis

Abaract--Like many other thermoluminescence materials, CaSO4:Dy, irradiated to doses above 102 Gy, annealed partially and exposed to UV, also exhibits strong photo-transfer thermoluminescence (FITL). The aim of the present study was to understand the mechanism of the photo-transfer process. In CaSO4:Dy, the UV irradiation does not appear to produce free charge carriers from the filled deep traps for the transfer. The PTFL and the reduction in residual thermoluminescence suggest that the transfer originates not only from the residual thermoluminescence traps but also from other radiation induced non-luminescent centres.