论文标题
对中子滴水线附近富含中子核的核半径和中子皮肤厚度的研究
A study of nuclear radii and neutron skin thickness of neutron-rich nuclei near the neutron drip line
论文作者
论文摘要
我们研究了电荷半径（$ r_ {c} $），中子半径（$ r_n $）和中子皮肤厚度（$Δr= r_n-r_p $），从稳定区域到ZR的一系列同位素链，再到中子滴。理论计算是使用有效的非线性NL3和NL3*相互作用的轴向变形的自洽相对论均值场理论（RMF）完成的。将理论上估计的值与可用的实验数据进行比较，并注意到合理的一致性。我们还评估了两种中子分离能（$ s_ {2n} $），以标记所考虑的同位素系列的滴头线核。在$ s_ {2n} $的引用时，还讨论了中子魔术。将计算出的中子半径与由$ r = r_0n^{1/3} $进行的经验估计进行比较，以检查中子滴头线核的半径异常趋势。考虑到指导长尾巴，分析了某些皮肤候选物的密度分布。最后，对于整个考虑的同位素系列，观察到中子皮肤厚度。
We studied the charge radius ($r_{c}$), neutron radius ($r_n$), and neutron skin-thickness ($Δr=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.
