Many-body resonances and continuum states above many-body decay thresholds

3rd International Workshop on "State of the Art in Nuclear Cluster Physics"

Kato, K.^1 ; Myo, T.^2,3 ; Kikuchi, Y.^4

Nuclear Reaction Data Centre, Faculty of Science, Hokkaido University, Sapporo

060-0810, Japan^1

General Education, Faculty of Engineering, Osaka Institute of Technology, Osaka, Osaka

535-8585, Japan^2

Research Center for Nuclear Physics (RCNP), Osaka University, Ibaraki, Osaka

567-0047, Japan^3

RIKEN Nishina Center, Wako, Saitama

351-0198, Japan^4

关键词: Cluster models;    Complex scaling;    Continuum state;    Decay widths;    He isotopes;    Many-body resonance;    Mirror nuclei;    Mirror symmetry breaking;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/569/1/012025/pdf
DOI  :  10.1088/1742-6596/569/1/012025

来源: IOP

【 摘 要 】

We study the resonance spectroscopy of the He isotopes and their mirror, proton- rich nuclei with an α + N + N + N + N cluster model. Many-body resonances are treated with the correct boundary condition as the Gamow states using the complex scaling method. We obtain the resonances up to the five-body decaying states in8He and8C. The spectrum agrees with the recent experiment systematically for energies and decay widths and we predict several resonances. We also discuss the mirror symmetry breaking of He isotopes and their mirror nuclei for the configurations and the spatial distributions of the valence nucleons.