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HK: Fachverband Physik der Hadronen und Kerne
HK 15: Structure and Dynamics of Nuclei IV
HK 15.2: Vortrag
Dienstag, 12. März 2024, 16:15–16:30, HBR 14: HS 4
Search for near-threshold multi-neutron resonances in (p,2p) reactions with neutron-rich nuclei at R3B — •Nikhil Mozumdar1,2, Antoine Barriere4, Martina Feijoo-Fontán5, Thomas Aumann1,2,3, and Olivier Sorlin4 for the R3B collaboration — 1Technische Universität Darmstadt — 2Helmholtz Forschungsakademie Hessen für FAIR — 3GSI Helmholtz-Zentrum für Schwerionenforschung — 4Grand Accélérateur National d’Ions Lourds — 5University of Santiago de Compostela
In order to constrain the largely unknown multi-neutron interactions, it is necessary to measure the relevant observables sensitive to them. One such property is the possible existence of narrow resonances related to multi-neutron cluster structures and correlations. This can be investigated by studying multi-neutron resonances close to the corresponding neutron removal thresholds in neutron-rich light nuclei. Towards this end an experiment was performed at the state-of-the-art R3B Setup in GSI, within the FAIR Phase-0 program. Quasi-free scattering (p,2p) reactions are studied in inverse kinematics where a radioactive ion "cocktail" beam is impinged on a 5cm LH2 target. Complete kinematic information of resulting reactions is provided by the large combination of detectors in the setup. In this communication, the first 2-neutron reconstruction procedure in the neutron detector NeuLAND will be discussed along with preliminary results.
Supported by HFHF, the GSI-TU Darmstadt cooperation and the BMBF project 05P21RDFN2.
Keywords: Quasi-free scattering; Nuclear structure; Nuclear clustering; Unbound states; Neutron detection