Speaker
Description
The interaction cross section (σI) is a fundamental observable that provides valuable information about the spatial extent of atomic nuclei and can be used to derive the nuclear matter radius. By determining nuclear radii, we can improve our understanding of nuclear structure and how nuclear size changes across the nuclear chart.
Traditionally, nuclear charge radii have been obtained from electron scattering and laser spectroscopy experiments. However, nuclear matter radii have not yet been widely determined from interaction cross sections over a wide range of mass numbers.
The TRIP-S3CAN experiment in 2025 at RIKEN’s Radioactive Isotope Beam Factory (RIBF) aims to systematically investigate approximately 300 isotopes over a wide range of atomic numbers Z = 25–60. In this experiment, the magnetic rigidity (Bρ), time of flight (TOF), and energy loss (∆E) of the particles were measured to determine Z and mass-to-charge ratio (A/Q), and to identify the isotopes contained in the secondary beam. In this study, we determined the experimental interaction cross sections for nuclei near the line of stability. These results were compared with theoretical model predictions to clarify the structure of stable and near-stable nuclei and to elucidate nuclear reaction mechanisms more precisely.
