论文部分内容阅读
Nonlinear relativistic mean field(RMF) theory with a new effective interaction NL3 has been used to investigate the bulk properties of 12B nucleus and its daughter nuclei. The results obtained in RMF indicate one neutron halo in 12B nucleus at an excited state. The density distribution of neutrons in the excited state of 12B has a long tail and the nucleon in 2s1/2 state has very small separation energy. The rms radius of halo neutron is about twice larger than that of matter. Meanwhile, it becomes more apparent that nuclear halo is a general feature of loosely bound nuclei. As the binding energy becomes smaller, to form a bound state the nucleon tends to occupy a state with a low angular momentum. It
The results obtained in RMF indicate a neutron halo in 12B nucleus at an excited state. The density distribution (RMF) theory with a new effective interaction NL3 has been used to investigate the bulk properties of 12B nucleus and its daughter nuclei. of neutrons in the excited state of 12B has a long tail and the nucleon in 2s1 / 2 state has very small separation energy. The rms radius of halo neutron is about twice larger than that of matter. is a general feature of loosely bound nuclei. As the binding energy becomes smaller, to form a bound state the nucleon tends to occupy a state with a low angular momentum. It