Hole‐trapping sites and the mechanism of the photostimulated luminescence of the x‐ray storage phosphor RbI:Tl+

Autor:	Johann Martin Spaeth, Thomas D. Pawlik, Uldis Rogulis, Th. Hangleiter, C. Dietze
Rok vydání:	1996
Předmět:	Photostimulated luminescence Chemistry Radiochemistry X-ray Radiation damage Analytical chemistry General Physics and Astronomy Phosphor Irradiation Trapping Absorption (electromagnetic radiation) Luminescence
Zdroj:	Journal of Applied Physics. 80:2430-2435
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.363078
Popis:	Radiation damage centers generated by x irradiation at 80 and 300 K in the storage phosphor RbI:Tl+ were investigated with optically detected magnetic resonance and optical measurements. It is shown that the intensity of the photostimulated luminescence depends on the concentration of Tl2+ centers. Bleaching into any of the seven identified Tl2+ absorption bands destroys the Tl2+ centers and leads to a Tl+ emission as well as to VK centers. Proportionally to photodestruction of Tl2+ centers, the photostimulated luminescence is decreased. The traps for information storage in RbI:Tl+ are F centers and Tl2+ centers.
Databáze:	OpenAIRE
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