EU-DOPED KCL PHOSPHOR CRYSTALS AS A STORAGE MATERIAL FOR 2-DIMENSIONAL ULTRAVIOLET-RAY OR X-RAY-IMAGING SENSORS

被引：45
作者：
NANTO, H
ENDO, F
HIRAI, Y
NASU, S
TANIGUCHI, S
TAKEUCHI, N
机构：
[1] KANAZAWA INST TECHNOL,DEPT ELECT ENGN,NONOICHI,ISHIKAWA 921,JAPAN
[2] KANAZAWA UNIV,FAC TECHNOL,KANAZAWA,ISHIKAWA 920,JAPAN
来源：
JOURNAL OF APPLIED PHYSICS | 1994年 / 75卷 / 11期
关键词：
D O I：
10.1063/1.356621
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Intense optically stimulated luminescence (OSL) with a peak at about 430 nm is observed in ultraviolet (UV)-ray or x-ray irradiated europium-doped potassium chloride (KCl:Eu) phosphor crystals. The OSL intensity is increased with increasing UV-ray or x-ray irradiation dose. This suggests that KCl:Eu phosphor crystal is useful as a material for two-dimensional UV-ray or x-ray imaging sensor utilizing OSL phenomenon. The results obtained are consistent with the proposed emission mechanisms of the 420 nm OSL peak, based on the recombination of electrons released from the F centers with Eu3+ ions. The excitation mechanism for the OSL in UV-ray irradiated KCl:Eu phosphor crystals is also discussed.
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页码：7493 / 7497
页数：5
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