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HK: Fachverband Physik der Hadronen und Kerne
HK 33: Structure and Dynamics of Nuclei IX
HK 33.5: Vortrag
Mittwoch, 12. März 2025, 18:45–19:00, HS 2 Physik
Study of short-range correlations in asymmetric nuclei at R3B — •Manuel Xarepe1,2,3, Andrea Lagni4, Hang Qi5, and Enis Lorentz2 — 1Faculty of Science of the University of Lisbon — 2Technischen Universität Darmstadt — 3Helmholtz Forschungsakademie Hessen für FAIR — 4University of Santiago de Compostela — 5Massachusetts Institute of Technology
Nucleon-nucleon short-range correlations (SRCs), primarily composed of neutron-proton pairs, are a universal feature in atomic nuclei. Previous studies using electron scattering have shown that protons are more likely to form SRCs in asymmetric nuclei as the neutron excess increases. However, such studies are constrained to stable nuclei with limited neutron excess and do not allow for a clear separation of the mass effect from the neutron excess.
To address this limitation, we conducted an inverse kinematics experiment with the R3B setup at GSI-FAIR within the FAIR Phase-0 program. High-energy beams (E = 1.25 GeV/u) of the neutron-rich isotope 16C and the symmetric 12C were used with a liquid hydrogen target. In (p,2p) reactions, single nucleons were knocked out at large momentum transfer, even when bound in an SRC pair.
We will present the experimental methodology, identification of SRC pairs, and preliminary findings on their behaviour in neutron-rich nuclei. These results set the stage for future experiments at FAIR, enhancing our understanding of SRCs and their role in asymmetric nuclear matter. Supported by the Portuguese FCT, Project Refs: 2021.05736.BD and the BMBF project 05P21RDFN2.
Keywords: Short-range correlations; Quasi-Free scattering; Exotic Nuclei