Shell stabilization of super- and hyperheavy nuclei without magic gaps

Details Shell stabilization of super- and hyperheavy nuclei without magic gaps Shell stabilization of super- and hyperheavy nuclei without magic gaps

2001-03-24

arxiv.org/abs/nucl-th/0103065v1

Phys.Lett. B515 (2001) 42-48

Physics

Nuclear Physics

Nuclear Theory

6 pages REVTEX, 4 eps figures, submitted to Phys. Lett. B

Scientific paper

10.1016/S0370-2693(01)00863-2

Quantum stabilization of superheavy elements is quantified in terms of the shell-correction energy. We compute the shell correction using self-consistent nuclear models: the non-relativistic Skyrme-Hartree-Fock approach and the relativistic mean-field model, for a number of parametrizations. All the forces applied predict a broad valley of shell stabilization around Z=120 and N=172-184. We also predict two broad regions of shell stabilization in hyperheavy elements with N approx 258 and N approx 308. Due to the large single-particle level density, shell corrections in the superheavy elements differ markedly from those in lighter nuclei. With increasing proton and neutron numbers, the regions of nuclei stabilized by shell effects become poorly localized in particle number, and the familiar pattern of shells separated by magic gaps is basically gone.

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