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在双幻数核附近,核子间的相互作用比较容易研究。大量的在N～50区的研究[1]表明:本核区的核素大多具有球形核结构,一些以88Sr作为核心的壳模型计算[2]与实验数据符合得很好。而91Nb的质子数和中子数分别为41和50,中子为闭壳结构而质子为接近子壳层的闭壳结构。故其形状接近球形
In the vicinity of double magic number nucleus, the interaction between nucleons is relatively easy to study. A large number of studies in the N ~ 50 area [1] show that most of the nuclides in this nuclear region have a spherical nuclear structure. Some shell models with 88Sr as the core [2] are in good agreement with the experimental data. While the number of protons and neutrons of 91Nb are 41 and 50 respectively. The neutron is a closed shell structure and the proton is a closed shell structure close to the daughter shell. So its shape is close to spherical