Gamma-radiation effects on NaCl:Cu crystals

✍ Scribed by Cruz-Zaragoza, E. ;Chernov, V. ;Meléndrez, R. ;Barboza-Flores, M.

• Publisher: John Wiley and Sons
• Year: 2009
• Tongue: English
• Weight: 316 KB
• Volume: 206
• Category: Article
• ISSN: 0031-8965
• DOI: 10.1002/pssa.200925002

✦ Synopsis

Abstract

The γ‐radiation effects on copper‐doped NaCl:Cu crystals were investigated. Single crystals exposed to gamma radiation from 0.001 kGy to 30 kGy at room temperature exhibited optical absorption bands attributed to Cu^–^ (236 nm), Cu^+^ (255 nm) and F (463 nm) centers. The F and Cu absorption annealing bands were correlated to the thermoluminescence (TL) glow‐curve peak structure around 30–165 °C and 215–350 °C, respectively. The TL glow curves of samples doped with 0.04 mol% and 0.08 mol% of Cu^+^ ions showed a strong quenching effect for higher doping concentration. In addition, thermal bleaching of γ‐irradiated specimens confirmed the color centers and Cu‐doping participation on the TL process. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)