Fluorescence Spectrum and the Energy Levels of the Sm2+ Ion
Fluorescence Spectrum and the Energy Levels of the Sm2+ Ion
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Sm2 离子的荧光光谱和能级
DOI：
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发表时间：
1962
期刊：
影响因子：
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通讯作者：
R. Sarup
中科院分区：
文献类型：
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作者：
G. Dieke;R. Sarup
Sm 2+作为杂质以非常小的浓度出现在LaCl 3中，具有非常独特的荧光光谱，其在所有细节上都类似于Eu 3+。激发是通过对可见光中4f 55 d的非常强的连续吸收。能量转移到相隔1330 cm-1的4f 6构型的稳定状态5D 0和5D 1，从该稳定状态5D 0和5D 1观察到向基态多重峰7 F的分量的发射。事实上，在所有情况下的空间简并被完全删除表明，周围的Sm 2+离子的字段具有低对称性，即使它取代的La 3+离子是在一个六角形字段。
Sm2+ which occurs as impurity in very small concentrations in LaCl3 has a very distinctive fluorescence spectrum which resembles in all details that of Eu3+. Excitation is through the very strong continuous absorption to 4f55d in the visible. The energy is transferred to the stable states 5D0 and 5D1 of the 4f6 configuration separated by 1330 cm—1 from which emission to the components of the ground multiplet 7F is observed. The fact that in all cases the spatial degeneracy is completely removed shows that the field around the Sm2+ ion has low symmetry even though the La3+ ion which it replaces is in an hexagonal field.