相对论平均场理论框架下对能的系统研究

在相对论平均场模型的框架内，沿原子核的稳定线，以每隔4个质子或中子提取样本的方法，计算了核谱图上数十个原子核的对能，特别是研究了氧同位素偶-偶核的对能随核子数的变化规律，发现在固定能隙Δ的条件下，对能的大小和核的壳结构有关，由此提出了一种检验闭壳效应的简便方法，进而发现中子数N=6不仅在轻核的丰中子区是一个新幻数，而且在丰质子区也是一个可能的新幻数. 关键词： 相对论平均场模型 对能 能隙 幻数

A systematic study on nuclear pairing energy under the relativistic mean-field model

Nuclear pairing energy of dozens of atomic nuclei in nuclear period chart are calculated along the stable line by extracting the swatch at a proton or neutron number interval of 4. Especially, we have studied the rule of pairing energy of the even-even nuclei of O isotopes changing with nucleon number under the relativistic mean-field model, and found, when energy gap Δ is fixed, the magnitude of nuclear pairing energy is related to nuclear shell structure. Thereof we propose a simple method to test closed shell, and further, we conclude that the neutron number N=6 is a new magic number not only in neutron-rich region, but also in proton-rich region of light nuclei.