Charge radius isotope shift across the N=126 shell gap.
Charge radius isotope shift across the N=126 shell gap.
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DOI：
10.1103/physrevlett.110.032503
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发表时间：
2012-10
影响因子：
8.6
通讯作者：
P. Goddard;P. Stevenson;Arnau Rios
中科院分区：
文献类型：
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作者：
P. Goddard;P. Stevenson;Arnau Rios
我们重新讨论了N=126壳层闭合附近丰中子偶同位素电荷半径漂移的扭结问题。我们表明，Skyrme力再现同位素位移的能力是由超过N=126的中子1 i（11/2）轨道的占据和它引起的主量子数为1的深束缚质子轨道的相应变化决定的。给定单粒子能量的观测位置，我们必须确保通过相关性允许占据，或者不要求单粒子能量与平均场水平下的实验值一致。
We revisit the problem of the kink in the charge radius shift of neutron-rich even isotopes near the N=126 shell closure. We show that the ability of a Skyrme force to reproduce the isotope shift is determined by the occupation of the neutron 1i(11/2) orbital beyond N=126 and the corresponding change it causes to deeply-bound protons orbitals with a principal quantum number of 1. Given the observed position of the single-particle energies, one must either ensure occupation is allowed through correlations, or not demand that the single-particle energies agree with experimental values at the mean-field level.