在相对论理论中研究原子核的巨单极态

在相对论的手征对称破缺模型基础上,应用Jocal Lorentz boost和scaling座标方法,首先采用Hartree近似讨论了无限核物质的巨单极共振激发态,但计算结果略大于实验值。进而采用Thomas-Fermi近似处理有限核的表面效应以及核子分布的非均匀性对原子核巨单极共振激发能的影响,自洽计算的结果和实验符合得很好,由此证明对于巨共振态,考虑核子分布的非均匀性以及核的表面效应是十分重要的。

A Study of Giant Monopole States in Relativistic Theory

Giant monopole states of the nuclear systems are studied with the use of a local Lorentz boost and scaling method in the relativistic chiral breaking field theory. Meanwhile, the excitation energy of the giant monopole states in the nuclear matter are discussed by using the Hartree approximation. Next, the Lorentz boost and scaling are developed to study finite muclei, and the nuclear surface and the density distribution are treated within the relativistic Thomas-Fermi approximation. The excitation energy of giant resonances are self-consiste-nely calculated. The calculated resutls can be agreement with experient date very well. It is found that the effect of nuclear surface and the density dis-tribution on excitation energy of the giant monopoles is important.