The Quest for the Heaviest Uranium Isotope

Abstract

We study Uranium isotopes and surrounding elements at very large neutron number excess. Relativistic mean field and Skyrme-type approaches with different parametrizations are adopted in the study. Most models show clear indications for isotopes that are stable with respect to neutron emission far beyond N=184 up to the range of around N=258.

Studies of the neutron star crust

“…This has been demonstrated, e.g. in [2], where it was shown that the drip point for the example of uranium isotopes varies by more than 70 neutrons, looking at a range of standard Skyrme and relativistic mean field (RMF) approaches. Fig.…”

The Peninsulas of Neutron Stability of Nuclei on Nuclear Chart

“…Here one can also see the stability peninsula at N=258. This magic number was discussed in [4]. Fig.…”

Impacts of the tensor couplings ofωandρmesons and Coulomb-exchange terms on superheavy nuclei and their relation to the symmetry energy

“…From the experimental side, the picobarn ranges of cross sections for production of these nuclei provide limited structural information. On the other hand, the α-decay chains of nuclei synthesized in experiments using a 48 Ca beam with actinide targets are stopped by spontaneous fission before reaching the known region of nuclear chart.…”