| 中子探测晶体Li6Gd(BO3)3:Ce的光谱特性研究 |
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| 引用本文： | 杨帆,潘尚可,丁栋舟,吴云涛,任国浩.中子探测晶体Li6Gd(BO3)3:Ce的光谱特性研究[J].物理学报,2011,60(11):113301-113301. |
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| 作者姓名： | 杨帆 潘尚可 丁栋舟 吴云涛 任国浩 |
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| 作者单位： | 中国科学院上海硅酸盐研究所,上海 201800 |
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| 基金项目： | 国家高技术研究发展计划(批准号: 2007AA03Z444)和国家自然科学基金(批准号:50902145)资助的课题. |
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| 摘 要： | 文章用提拉法生长出Li6Gd(BO3)3:Ce晶体,并对其光谱性能与发光过程进行了探索. 借助于真空紫外-紫外透过光谱测试,发现晶体的透过光谱中存在Ce3+离子和Gd3+的特征吸收峰,同时还存在与Ce4+离子相关的电荷迁移带. 对晶体的真空紫外-紫外激发发射光谱进行研究发现,在晶体存在着Ce3+离子的5d→4f辐射跃迁发光与Gd3+离子的4f→4f辐射跃迁发光,而且存在着Gd3+→Ce3+之间的能量传递. 对Li6Gd(BO3)3:Ce晶体的X射线与γ射线激发发射光谱研究可知,晶体在高能射线激发下的闪烁光主要是Ce3+离子的发光.
关键词：
6Gd(BO3)3:Ce晶体')" href="#">Li6Gd(BO3)3:Ce晶体
真空紫外-紫外透过光谱
真空紫外-紫外激发发射光谱
能量传递
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| 关 键 词： | Li6Gd(BO3)3:Ce晶体 真空紫外-紫外透过光谱 真空紫外-紫外激发发射光谱 能量传递 |
| 收稿时间： | 2010-12-25 |
Optical characterization of neutron detection crystal Li6Gd(BO3)3:Ce |
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| Yang Fan,Pan Shang-Ke,Ding Dong-Zhou,Wu Yun-Tao and Ren Guo-Hao.Optical characterization of neutron detection crystal Li6Gd(BO3)3:Ce[J].Acta Physica Sinica,2011,60(11):113301-113301. |
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| Authors: | Yang Fan Pan Shang-Ke Ding Dong-Zhou Wu Yun-Tao and Ren Guo-Hao |
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| Institution: | Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201800, China;Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201800, China;Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201800, China;Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201800, China;Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201800, China |
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| Abstract: | Colorless and transparent Li6Gd(BO3)3:Ce crystals are grown with the Czoralski method. Their optical characteristics and luminescence processes are also investigated. The ultraviolet-vaccum ultraviolet (UV-VUV) transmittance spectra are measured and the result shows that absorption peaks due to Ce3+ ions and Gd3+ ions, and the absorption band related to charge transfer band of Ce4+ ions are present. According to the UV-VUV excitation and emission spectra, it is found that there appear luminescences of 5d→4f radiative transitions of Ce3+ ions and of 4f→4f radiative transitions of Gd3+ ions, and also Gd3+→Ce3+ energy transfer. The X-ray and γ-ray stimulated luminescence spectra show that the scintillation light of the crystal is mainly from Ce3+ ions. |
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| Keywords: | Li6Gd(BO3)3:Ce crystal ultraviolet-vaccum ultraviolet transmittance spectrum excitation and emission spectrum energy transfer |
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