Decay spectroscopy of exotic nuclei at RIBF

The advent of radioactive ion beam facilities, such as RIBF at RIKEN and FRIB at MSU, is expected to grant nuclear physics access to the study of unstable nuclei, ranging from proton drip line to neutron-rich nuclei close to the astrophysical r-process path. Nuclear decay is a common process for most of the unstable nuclei that decay into more stable forms via the emission of beta particles, alpha particles, protons, and neutrons, with the exception of heavier nuclei that undergo fission.

Nuclear decay spectroscopy has emerged as a crucial tool for examining these exotic nuclei, especially where the production yield at RI beam facilities is insufficient for reaction-based studies. At RIBF, a diverse array of decay spectroscopy setups has been implemented, including isomer and beta-gamma spectroscopy (EURICA), beta-delayed neutron branching ratio measurement (BRIKEN), beta-delayed neutron spectroscopy (VANDLE), alpha-decay measurement, two-proton radioactivity, and others. These experiments have charted various regions of the nuclear landscape and provided systematic data that provide unique insight into the nuclear shell structure, collective properties such as deformation, and astrophysical nucleosynthesis.

This talk will offer an overview of decay spectroscopy at RIBF and suggest potential avenues for future experiments.