Nuclear shell effects near the r-process path

Abstract

We have studied the evolution of the shell structure of nuclei near the neutron drip line in the Relativistic Hartree-Bogoliubov (RHB) theory with the vector self-coupling of omega meson. The experimental data on the shell effects about the waiting-point nucleus ${}^{80}$Zn are reproduced successfully. It is shown that the shell effects at N=82 near the r-process path remain strong. A quenching exhibited by the HFB+SkP approach is shown not to be compatible with the available data.

Comments: 4 ps pages, figures included, Contribution to Sixth International Conference on Nuclei in Cosmos, Aaarhus, 27 June - 1 July, 2000