论文标题
对电荷半径的比较研究及其在魔术数字上的扭结
Comparative study on charge radii and their kinks at magic numbers
论文作者
论文摘要
电荷半径的同位素依赖性，即同位素移位，由Skyrme Hartree-Fock，相对论均值场和相对论Hartree-Fock计算计算得出的同位素移位，将其与魔术和半核的实验数据进行了比较。发现张量相互作用在复制``扭结''行为，同位素魔术数字以相对论的Hartree-fock方法中的不规则行为发挥作用。有了几种Skyrme模型，可以发现，可以使用具有非零的等异摩托通道的自旋轨道相互作用来复制扭结行为。费米能量附近的单粒子轨道对于确定扭结尺寸至关重要。还讨论了对称能量和配对相互作用的效果。
Isotope dependences of charge radii, i.e., isotope shifts, calculated by the Skyrme Hartree-Fock, the relativistic mean-field, and the relativistic Hartree-Fock calculations are compared against the experimental data of magic and semimagic nuclei. It is found that the tensor interaction plays a role in reproducing the ``kink'' behavior, irregularity of isotope shifts at the neutron magic number, in the relativistic Hartree-Fock approach. With several Skyrme models, it is found that the kink behavior can be reproduced with the spin-orbit interaction having nonzero isovector channel. The single-particle orbitals near the Fermi energy are crucial to determine the kink size. The effects of the symmetry energy and the pairing interaction are also discussed in relation to the kink behavior.
