Erlangen 2026 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 31: Structure and Dynamics of Nuclei VII
HK 31.3: Talk
Thursday, March 19, 2026, 14:45–15:00, AM 00.011
Measurements of the reaction cross sections of neutron-rich Sn isotopes at the R3B setup — •Eleonora Kudaibergenova1, Thomas Aumann1, 2, 3, Igor Gasparic4, Andrea Horvat4, Ivana Lihtar5, Lukas Ponnath1, and Dominic Rossi1,2 for the R3B collaboration — 1Institut für Kernphysik, TUDa, Germany — 2GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany — 3Helmholtz Forschungsakademie HFHF — 4Rudjer Boskovic Institute, Zagreb, Croatia — 5Facility for Rare Isotope Beams, MSU, USA
Constraining the parameters of the nuclear Equation of State (EoS) is one of the central issues in nuclear physics, especially since the slope parameter L is still poorly constrained experimentally. It has been identified that a precise determination of the neutron-removal cross section in neutron-rich nuclei, which correlates with the neutron-skin thickness, would provide constraints on L. To this end, an experiment was performed at the R3B setup at GSI as a part of the FAIR Phase-0 program. The reactions are studied in inverse kinematics with neutron-rich tin isotopes in the mass range A=124-134 on carbon targets of different thicknesses. In this communication the total reaction, charge-changing and charge-exchange analysis of 124Sn+ 12C at 900 MeV/u is presented.
The project was supported by the BMFTR via Project No. 05P24RD1, the Helmholtz Research Academy Hessen for FAIR and the GSI-TU Darmstadt cooperation agreement.
Keywords: Nuclear Equation of State; Reaction cross section; Symmety energy slope parameter; Neutron skin; FAIR Phase-0