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本文从理论上讨论了晶场作用对稀土离子能级重心位移的影响, 具体计算了J 混效应对15 个含Nd 3十离子的晶体中的l-J- 能级重心的位移. 结果指出J 混效应加宽了光谱项-(2s +l)- L由于自旋轨道祸合导致的能级劈裂宽度, 并且与晶体基质的组成、结构有关.In this paper, the influence of crystal field on the shift of center of gravity of rare earth ion are discussed theoretically. The shifts of the center of gravity of‘I , state due to the J-mixing effect occur in 15 crystals doped Nd3+ are calculated. The results show that the splitting width of spectral term,
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