| CaS:Pr,Na的激光选择激发 |
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| 引用本文： | 黄世华,李文连.CaS:Pr,Na的激光选择激发[J].发光学报,1997,18(1):1-8. |
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| 作者姓名： | 黄世华 李文连 |
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| 作者单位： | 1. 中国科学院激发态物理开放研究实验室, 长春130021;2. 中国科学院长春物理研究所, 长春130021 |
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| 摘 要： | 本文用激光选择激发研究了CaS:Pr,Na中Pr3+的3P0→3F2发光,分辨出5种不同的Pr中心。用三个参数描述立方晶场中受电荷补偿结构影响的稀土离子的能级劈裂,其中两个参数是立方晶场参数B4和B6,另一个反映引入电荷补偿结构后立方晶场的畸变。对3F2能级劈裂的拟合结果表明,发光来自受不同距离上电荷补偿结构影响的Pr中心.
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| 关 键 词： | 激光选择激发 镨的光谱 硫化钙 电荷补偿 |
| 收稿时间： | 1996-03-21 |
LASER SELECTIVE EXCITATION IN CaS:Pr,Na |
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| Huang Shihua,Li Wenlian.LASER SELECTIVE EXCITATION IN CaS:Pr,Na[J].Chinese Journal of Luminescence,1997,18(1):1-8. |
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| Authors: | Huang Shihua Li Wenlian |
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| Institution: | 1. Laboratory of Excited State Processes, Chinese Academy of Sciences, Changchun 130021;2. Changchun Institute of Physics, Chinese Academy of Sciences, Changchun 130021 |
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| Abstract: | 3P0 to 3F2 fluorescence of Pr3+ in CaS:Pr, Na is studied by means of laser selective excitation. Five Pr centers are revealed. A three-parameter model is used to describe the Hamiltonian of rare earth ions in a cubic lattice with charge compensators. Two of the parameters are B 4 and B 6 of the original cubic crystal, the third is related to the distortion due to introducing the compensator. Fitting the splittings of 3F2 with such a model has shown that the observed centers are Pr3+ with charge compensator situated at different distances. |
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| Keywords: | laser selective excitation spectra of praseodymium calcium sulfide charge compensation |
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