提出了一种从理论上:检验壳效应的方法.即在考虑了BCS近似的相对论平均场理论框架内,通过计算粒子数的涨落,发现涨落的大小和核的壳结构有紧密的关系,由此从理论上证明了在滴线附近的丰中子区,传统幻数N=28已经消失.
A theoretical method for testing shell effect is proposed. In the framework of the relativistic mean-field theory with the consideration of the BCS approach, by calculating the fluctuation of the particle-number; we discover that particle number fluctuations are closely related with the nuclear shell structure. As a consequence, the traditional magic number N=28 disappears in the neutron-rich area near the drip-line.