论文标题
连续耦合的现实游戏壳模型计算中的富含中子的钙同位素
Neutron-rich calcium isotopes within realistic Gamow shell model calculations with continuum coupling
论文作者
论文摘要
基于高精度CD-BONN电位的逼真的核力量，我们使用包括共振和连续体的Gamow Shell模型（GSM）进行了全面的中子钙同位素计算。现实的GSM计算产生了良好的结合能，单中和两中子分离能，预测$^{57} $ ca是最重的界限奇数同位素，$^{70} $ ca是滴灌核。预测共振状态，为将来的富含中子钙同位素颗粒排放的实验提供了有用的信息。通过计算有效的单粒子能，第一个$ 2^+$状态的激发能和两种中性分离能的激发能，可以理解中子数\ textit {n} = 32、34和40周围钙链中的壳演变。这些计算支持$^{52} $ ca（\ textit {n} = 32）和$^{54} $ ca（\ textit {n} = 34），但显示出$^{60} $ ca（\ textit {n} = 40）的外壳闭合弱的壳。预测可能会预测$^{70} $ ca（\ textit {n} = 50）的外壳闭合。
Based on the realistic nuclear force of the high-precision CD-Bonn potential, we have performed comprehensive calculations for neutron-rich calcium isotopes using the Gamow shell model (GSM) which includes resonance and continuum. The realistic GSM calculations produce well binding energies, one- and two-neutron separation energies, predicting that $^{57}$Ca is the heaviest bound odd isotope and $^{70}$Ca is the dripline nucleus. Resonant states are predicted, which provides useful information for future experiments on particle emissions in neutron-rich calcium isotopes. Shell evolutions in the calcium chain around neutron numbers \textit{N} = 32, 34 and 40 are understood by calculating effective single-particle energies, the excitation energies of the first $2^+$ states and two-neutron separation energies. The calculations support shell closures at $^{52}$Ca (\textit{N} = 32) and $^{54}$Ca (\textit{N} = 34) but show a weakening of shell closure at $^{60}$Ca (\textit{N} = 40). The possible shell closure at $^{70}$Ca (\textit{N} = 50) is predicted.
