Studies of light neutron-excess systems from bound states to continuum

10th International Conference on Clustering Aspects of Nuclear Structure and Dynamics

Ito, Makoto^1,2 ; Otsu, Hideaki^2

Department of Pure and Applied Physics, Kansai University, 3-3-35 Yamate-cho, Suita, Osaka 564-8680, Japan^1

RIKEN Nishina Center for Accelerator-base Science, RIKEN, Wako, 351-0198, Japan^2

关键词: Alpha decay;    Bound state;    Chemical bondings;    Cluster formations;    Cluster models;    Neutron excess;    Neutron-rich systems;    Single-particle configurations;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/436/1/012027/pdf
DOI  :  10.1088/1742-6596/436/1/012027

来源: IOP

【 摘 要 】

The generalized two-centre cluster model (GTCM), which can handle various single-particle configurations in general two-centre systems, is applied to the light neutron-rich system,12Be = α+α+4N. We discuss the change of the neutrons' configuration around two α cores as the excitation energy varies. We show that the excess neutrons form various chemical-bonding-like configurations around the two α cores in the unbound region above the α-decay threshold. The possibility of α-cluster formation in a heavier system with neutron excess,28Ne, is also discussed.