2024/12/16 by A. Le Fèvre, A. Chbihi, Fèvre, Arnaud Le +28
Physics and Astronomy · #Nuclear physics research studies #High-Energy Particle Collisions Research #Astro and Planetary Science
paper · pdf · doi:10.48550/arxiv.2412.11648
A new method, based on comparing isotopic yield ratios measured at forward and sideward polar angles and on cross-bombarding heavy nuclei with different neutron-to-proton ratios, is used to quantify the stopping power of nuclear matter in heavy-ion collisions. For central collisions of isotopically separated 124,129Xe+112,124Sn at 100~MeV/nucleon bombarding energy, measured with the 4π multidetector INDRA at GSI, a moderate transparency is deduced for hydrogen isotopes, whereas for heavier fragmentation products with atomic number Z ≥ 3 a high transparency exceeding 50% is observed. An anomalously large transparency is found for alpha particles, and possible explanations are presented.