Nuclear Shell Effects near the r-Process Path at N=82 in the Relativistic Hartree-Bogoliubov Theory

M. M. Sharma; A. R. Farhan

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Nuclear Shell Effects near the r-Process Path at N=82 in the Relativistic Hartree-Bogoliubov Theory

M. M. Sharma·A. R. Farhan

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Abstract

Evolution of the shell structure of nuclei near the neutron drip line is investigated in the Relativistic Hartree-Bogoliubov (RHB) theory. By introducing the vector self-coupling of $ω$ meson in the RHB theory, we reproduce successfully the experimental data on the shell effects about the waiting-point nucleus $^{80}$Zn. With this basis, it is shown that the shell effects at N=82 in the inaccessible region of the r-process path remain strong. In contrast, a quenching exhibited by the HFB+SkP approach is shown to be incompatible with the available data. Consequently, the neutrino-driven mechanism of the nucleosynthesis is supported.

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M. M. Sharma, A. R. Farhan. 2000-06-21. Nuclear Shell Effects near the r-Process Path at N=82 in the Relativistic Hartree-Bogoliubov Theory. https://arxiv.org/abs/nucl-th/0006046

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