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Shell-model study of Pb, Bi, Po, At, Rn, and Fr isotopes with masses from 210 to 217

机译:Pb,Bi,Po,At,Rn和Fr同位素的壳模型研究从210到217

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Large-scale shell-model calculations are performed for even-even, odd-mass, and doubly odd nuclei of Pb, Bi, Po, At, Rn, and Fr isotopes in the neutron rich region (N 126) assuming Pb-208 as a doubly magic core. Seven orbitals above the magic number 126, the 1g(9/2), 0i(11/2), 0j(5/2), 2d(5/2), 3s(1/2), 1g(7/2), and 2d(3/2) orbitals, are considered for neutrons and all the six orbitals between the magic numbers 82 and 126, the Oh(9/)(2), 1f(7/2), 0i(13/2), 2p(3/2), 1f(5/2), and 2p(1/2) orbitals, are considered for protons. For a phenomenological effective two-body interaction, one set of the monopole-pairing, quadrupole-quadrupole, and multipole-pairing interactions is adopted for all the nuclei considered. The calculated energies and electromagnetic properties are compared with the experimental data. Many isomeric states are analyzed in terms of the shell-model configurations. The spins and parities of some experimentally ambiguous states are suggested.
机译:在中子富区域(N> 126)中对Pb,Bi,Po,At,Rn和FR同位素进行均匀均匀,奇数和双奇核的大规模壳模型计算。假设PB- 208作为双重魔法核心。 七个轨道上方的魔法数字126,1g(9/2),0i(11/2),0j(5/2),2d(5/2),3s(1/2),1g(7/2) 和2D(3/2)轨道,被认为是中子和魔号82和126之间的所有六个轨道,OH(9 /)(2),1f(7/2),0i(13/2)之间 ,2P(3/2),1F(5/2)和2P(1/2)轨道被认为是质子。 对于现象学有效的双体相互作用,对所有考虑的所有细胞核采用一组单孔配对,四极相对相互作用。 将计算的能量和电磁特性与实验数据进行比较。 在壳模型配置方面分析了许多异构状态。 提出了一些实验暧昧状态的旋转和阶段。

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