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利用Skyrme Hartree Fock势和Woods Saxon势 ,选取稳定核4 8Ca和丰中子核60 Ca ,对中子平均场势能进行了研究 ,并给出了其特性 .发现丰中子核60 Ca的SHF势与Woods Saxon势在核表面区域相当符合 ,但在核表面以外有相当大的差距 .SHF势在表面以外部分比表面区域呈现出更大的弥散度 ,而原有的Woods Saxon势不能描述这一特征 .为此 ,对Woods Saxon势形式进行了修正 ,经过验证 ,修正的Woods Saxon势能正确地描述丰中子核的中子晕特性 .
Based on the Skyrme Hartree Fock potential and the Woods Saxon potential, we choose the stable nuclei 48Ca and the abundance neutron nucleus 60 Ca to study the average potential energy of the neutron and give its characteristics. Which is quite consistent with the Woods Saxon potential in the nuclear surface region but with a considerable gap outside the nuclear surface. The SHF potential is larger than that of the surface region, and the original Woods Saxon can not describe this Therefore, the modified Woods Saxon potential can correctly describe the neutron halo characteristics of the abundance neutron nucleus.