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The nuclear shell effects near the r-process path in the relativistic Hartree-Bogoliubov theory | | M.M. Sharma
; A.R. Farhan
; | | Date: |
9 Feb 2002 | | Journal: | Phys.Rev. C65 (2002) 044301 | | Subject: | nucl-th astro-ph | | Abstract: | We have investigated the evolution of the shell structure of nuclei in going from the r-process path to the neutron drip line within the framework of the Relativistic Hartree-Bogoliubov (RHB) theory. By introducing the quartic self-coupling of $omega$ meson in the RHB theory in addition to the non-linear scalar coupling of $sigma$ meson, we reproduce the available data on the shell effects about the waiting-point nucleus $^{80}$Zn. With this approach, it is shown that the shell effects at N=82 in the inaccessible region of the r-process path become milder as compared to the Lagrangian with the scalar self-coupling only. However, the shell effects remain stronger as compared to the quenching exhibited by the HFB+SkP approach. It is also shown that in reaching out to the extreme point at the neutron drip line, a terminal situation arises where the shell structure at the magic number is washed out significantly. | | Source: | arXiv, nucl-th/0202031 | | Services: | Forum | Review | PDF | Favorites | |
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