Speaker
Description
We report proton elastic scattering experiments in inverse kinematics at the KoBRA beam line of the RAON facility, using ELARK (ELastic scattering detector Array for Reaction studies in inverse Kinematics), developed at CENS (Center for Exotic Nuclear Studies). The first experiment (KO-24-20) measured proton elastic scattering with a stable $^{40}$Ar beam at 4.4, 5.9, and 8.3 MeV/u. Since the phenomenological global optical potentials could not reproduce the data, new optical potential parameters were extracted through Chi-square minimization. The second experiment (KO-25-20) will measure proton elastic scattering with $^{21,25}$Na beams using additional silicon detectors covering the forward region. This experiment was designed based on differential cross sections calculated from double-folding optical potentials with deformed nuclear density profiles, and the silicon detectors will be placed at the expected dip positions. The result will allow us to verify the reliability of this calculation method in describing nuclear scattering cross sections.