标题： 丰中子核附近的中子滴线核的核半径和中子皮层厚度的研究 显示英文标题

标题： A study of nuclear radii and neutron skin thickness of neutron-rich nuclei near the neutron drip line

摘要： 我们研究了从C到Zr的同位素链中稳定区域到中子滴线范围内的电荷半径（$r_{c}$）、中子半径（$r_n$）和中子皮层厚度（$\Delta r=r_n-r_p$）。理论计算采用轴向变形自洽相对论平均场理论（RMF），使用有效非线性NL3和NL3*相互作用。理论估算值与可用的实验数据进行了比较，并注意到合理的吻合。我们还评估了双中子分离能（$S_{2n}$），以标记所考虑同位素系列的滴线核。参照$S_{2n}$，也讨论了中子魔数。计算得到的中子半径与由$r=r_0N^{1/3}$作出的经验估计进行了比较，以检验中子滴线核半径的异常趋势。为了指导长尾分布，分析了一些候选皮肤的密度分布。最后，观察了整个考虑的同位素系列的中子皮层厚度。 显示英文摘要

摘要： We studied the charge radius ($r_{c}$), neutron radius ($r_n$), and neutron skin-thickness ($\Delta r=r_n-r_p$) over a chain of isotopes from C to Zr with the stable region to the neutron drip line. Theoretical calculations are done with axially deformed self-consistent relativistic mean-field theory (RMF) with effective nonlinear NL3 and NL3* interactions. The theoretically estimated values are compared with available experimental data and a reasonable agreement are noted. We additionally assessed the two-neutron separation energy ($S_{2n}$) to mark the drip line nuclei of the considered isotopic series. In the reference of $S_{2n}$, neutron magicity is also discussed. The calculated neutron radii are compared with empirical estimation made by $r=r_0N^{1/3}$ to examine the abnormal trend of the radius for neutron drip line nuclei. In view to guide the long tails, the density distribution for some skin candidates is analyzed. Finally, neutron skin thickness is observed for the whole considered isotopic series.