Conveners
Session 4
- Wataru Horiuchi (Osaka Metropolitan University)
We have been systematically studying shape coexistence and shape evolution in neutron-rich nuclei. These are one of the important subjects to understand appearance of variety of nuclear structure as increase of neutron and proton numbers. We have studied change of nuclear structure by the $\beta$ decay in wide isospin region such as neutron-rich Mg and Al isotopes close to ‘Island of Inversion...
In this talk, the some experimental results from the previous decay spectroscopy carried out at RIBF, EURICA (EUROBALL-RIKEN Cluster Array), will be introduced. These results are mostly from the neutron-rich isotope beyond the doubly-magic $^{132}$Sn nucleus, which are important for the $r$-process nucleosynthesis scenario. New nuclear structure observables will be presented with the...
The rapid neutron capture process ($r$-process) is the most important mechanism for the synthesis of about half of the elements heavier than iron. It occurs in an environment with relatively high temperatures and high neutron densities. The abundances of the elements created by the $r$-process strongly depend on several nuclear inputs like masses, neutron capture rates, $\beta$-decay rates,...
The study of the $\beta$-decay half-lives and massees of waiting-point nuclei with $N = 126$ is crucial to understand the explosive astrophysical environment for the formation of the third peak in the observed solar abundance pattern, which is produced by a rapid neutron capture process (r-process). However, the half-life and mass measurements of the waiting-point nuclei remain impracticable...
