Portal de Periódicos da CAPES

Possibility of synthesizing a doubly magic superheavy nucleus

2007; American Institute of Physics; Volume: 75; Issue: 2 Linguagem: Inglês

10.1103/physrevc.75.024602

1538-4497

Y. Aritomo,

Quantum, superfluid, helium dynamics

The possibility of synthesizing a doubly magic superheavy nucleus, ${}^{298}{114}_{184}$, is investigated on the basis of fluctuation-dissipation dynamics. In order to synthesize this nucleus, we must generate more neutron-rich compound nuclei because of the neutron emissions from excited compound nuclei. The compound nucleus ${}^{304}114$ has two advantages to achieving a high survival probability. First, because of low neutron separation energy and rapid cooling, the shell correction energy recovers quickly. Secondly, owing to neutron emissions, the neutron number in the nucleus approaches that of the double closed shell and the nucleus attains a large fission barrier. Because of these two effects, the survival probability of ${}^{304}114$ does not decrease until the excitation energy ${E}^{*}=50$ MeV. These properties lead to a rather high evaporation residue cross section.