Köln 2025 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 55: Structure and Dynamics of Nuclei XII

HK 55.1: Gruppenbericht

Donnerstag, 13. März 2025, 17:30–18:00, HS 2 Physik

Overview of recent production cross-section measurements at the FRagment Separator FRS — •Suraj Kumar Singh for the Super-FRS Experiment collaboration — GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany — Justus-Liebig-Universität Gießen, Germany

Studies of nuclei far from the valley of stability are of interest because they provide insight into their sometimes new or unexpected properties, nuclear reactions and nuclear structure relevant for various fields of physics ranging from fundamental physics, nuclear astrophysics up to applications. Therefore, it is important to produce and study such exotic nuclides at the edges of stability. The possible rate and yield of the exotic isotopes, which are essential for each proposal for new experiments, are determined by their production cross-sections and require an accurate knowledge. As precise calculations of the production cross-section are difficult, the cross-section measurements are the first step towards research with isotopes far away from the valley of stability. The measured cross-sections shed light on production mechanisms and offer improved benchmarks for theoretical models, too. In this contribution, recent developments of the analysis and first results from the evaluation of production cross-sections of relativistic U, Er, Mo and Pb beams at the FRS at GSI will be presented.

Keywords: Exotic nuclei; Inflight separator; Production cross-section