Nuclear halo structure and pseudo-spin symmetry
Abstract
Nuclear halo structure and restoration of relativistic symmetry are studied within the framework of the relativistic Hartree-Fock-Bogoliubov (RHFB) theory. Giant halos as well as ordinary ones are found in Cerium isotopes close to the neutron drip line. Bridged by T=0 channel, the restoration of pseudo-spin symmetry (PSS) plays an essential role in stabilizing the neutron halo structures. The Fock terms, especially the -tensor couplings, not only play significant role in the PSS restoration but also present substantial contributions to the T=0 channel, from which is well demonstrated the necessity of Fock terms.
0