Influence of Li-codoping on the radiation hardness of CsBr:Eu2+
Influence of Li-codoping on the radiation hardness of CsBr:Eu2+
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Li共掺杂对CsBr:Eu2辐射硬度的影响
DOI：
10.1063/1.2743731
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发表时间：
2007
影响因子：
3.2
通讯作者：
W. Knüpfer
中科院分区：
文献类型：
--
作者：
J. Zimmermann;S. Hesse;H. Seggern;M. Fuchs;W. Knüpfer
CsBr:Eu2+本来性能优异的X射线存储磷光体的辐射硬度较差，这对其在医学诊断中的商业应用构成了问题。 X 射线诱导的空位中心（例如 M 中心）增强了 Eu2+ 激活剂的扩散，导致形成光刺激发光 (PSL) 不活泼的铕簇或铕化合物的第二相。本研究探讨了 Li 共掺杂对 CsBr:Eu2+ 辐射硬度的影响。据报道，Li+整合到CsBr:Eu2+中抑制了X射线辐照过程中M中心的产生，从而部分提高了辐射硬度。
The poor radiation hardness of the otherwise excellent x-ray storage phosphor CsBr:Eu2+ constitutes a problem for its commercial application in medical diagnostics. X-ray induced vacancy centers such as M-centers enhance the diffusion of Eu2+ activators resulting in a formation of photostimulated luminescence (PSL) inactive europium clusters or second phases of europium compounds. The present study investigates the influence of Li-codoping on the radiation hardness of CsBr:Eu2+. It is reported that the integration of Li+ into the CsBr:Eu2+ suppresses the generation of M-centers during x-irradiation and thereby partially improves the radiation hardness.