Possibility of synthesizing doubly closed superheavy nucleus

Details Possibility of synthesizing doubly closed superheavy nucleus Possibility of synthesizing doubly closed superheavy nucleus

2006-09-16

arxiv.org/abs/nucl-th/0609043v1

Phys.Rev.C75:024602,2007

Physics

Nuclear Physics

Nuclear Theory

5 pages, 6 figures

Scientific paper

10.1103/PhysRevC.75.024602

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 small neutron separation energy and rapid cooling, the shell correction energy recovers quickly. Secondly, owing to neutron emissions, the neutron number of the nucleus approaches that of the double closed shell and the nucleus obtains 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 reside cross section.

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