| BaFCl：Eu2+X射线存储机制的探讨 |
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| 引用本文： | 王振家,熊光楠.BaFCl：Eu2+X射线存储机制的探讨[J].发光学报,1995,16(1):20-26. |
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| 作者姓名： | 王振家 熊光楠 |
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| 作者单位： | 天津理工学院材料物理研究所, 天津 300191 |
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| 基金项目： | 国家自然科学基金,北京大学稀土国家重点实验室及中科院长春物理研究所开放实验室资助 |
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| 摘 要： | 本文报导了BaF2-xClx和BSFCl:Eu2-(0.1%)两种粉未样品的制备过程;及其系列样品的电子自旋共振的实验结果.认为BaFCl:Eu2-存储X射线的过程是:经X射线辐照后;在其晶体中形成自由电子和空穴,阴离子空位俘获一个电子形成F心,而空穴被束缚在两个氯离子上形成Vk(Cl2-)心,Vk(Cl2-)心经迁移被发光中心Eu2+所束缚.
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| 关 键 词： | 光激励发光 色心 X射线辐照 电子自旋共振 |
| 收稿时间： | 1994-03-14 |
STUDYING OF X-RAY STORAGE PROCESS IN BaFCl：Eu2+ |
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| Wang zhenjia,Xiong Guangnan,Teng Feng,Xu Xurong.STUDYING OF X-RAY STORAGE PROCESS IN BaFCl：Eu2+[J].Chinese Journal of Luminescence,1995,16(1):20-26. |
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| Authors: | Wang zhenjia Xiong Guangnan Teng Feng Xu Xurong |
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| Affiliation: | Institute of Material Physics, Tianjin Institute of Technology, Tianjin 300191 |
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| Abstract: | The samples of BaF2-xClx and BaFCl:Eu2+ are prepared.It is proved that F centers and VK(Cl2-)centers exist in the X-irradiated BaF2-xClx by the technique of electron spin resonance.The valent state of Eu2+ in BaFCl: Eu2+ does not change under Xirradiation and unirradiation. From above,the process of X-ray storage is advanced,after X-ray irradiate the sample of BaFCl:Eu2+,free electrons and holes are formed in it.The electrons are trapped in two chlorine ions to form Vk(Cl2-)centers.The VK (Cl2-) centers migrate nearby Eu2+,and finally become the stable VK(Cl2-)centers. |
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| Keywords: | photostimulated Luminescence color center X-irradiation electron spin resonance(ESR) |
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