Optically stimulable transparent KCl:Eu crystal as a storage material for two-dimensional UV-ray or x-ray imaging sensors
Optically stimulable transparent KCl:Eu crystal as a storage material for two-dimensional UV-ray or x-ray imaging sensors
复制标题
光激励透明 KCl:Eu 晶体作为二维紫外线或 X 射线成像传感器的存储材料
DOI：
10.1117/12.165189
复制
发表时间：
1993
影响因子：
3.2
通讯作者：
N. Takeuchi
中科院分区：
文献类型：
--
作者：
H. Nanto;K. Murayama;Fumitaka Endo;Y. Hirai;Shin;N. Takeuchi
在紫外（UV）或X射线辐照下，观察到掺铕氯化钾（KCl：Eu）晶体在420 nm处产生强烈的光释光（OSL）。光致发光强度随紫外线或X射线辐照剂量的增加而增加。这表明KCl：Eu晶体可用作利用OSL现象的二维UV射线或X射线成像传感器的材料。所得到的结果是一致的420 nm的OSL峰的建议的发射机制，从F中心与Eu3离子释放的电子的重组的基础上。本文还讨论了紫外光辐照KCl：Eu晶体光致发光的激发机理。
Intense optically stimulated luminescence (OSL) with a peak at about 420 nm is observed in ultraviolet (UV)-ray or x-ray irradiated europium-doped potassium chloride (KCl:Eu) crystals. The OSL intensity is increased with increasing UV-ray or x-ray irradiation dose. This suggests that KCl:Eu 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 crystals is also discussed.