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将不可约张量方法与直接积分方法相结合,计算了Pr~(3+)离子在D_2晶场中的约化矩阵元。计算结果对处于D_2晶场(如Pr:YIG,Pr:YAG)中Pr~(3+)离子的能谱普遍适用,且简明准确。
By combining the irreducible tensor method with the direct integral method, the reduced matrix elements of Pr ~ (3+) ions in D_2 crystal field are calculated. The calculation results are generally applicable to the energy spectrum of Pr ~ (3+) ions in D_2 crystal field (such as Pr: YIG, Pr: YAG) and are concise and accurate.