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HK: Fachverband Physik der Hadronen und Kerne

HK 3: Structure and Dynamics of Nuclei I

HK 3.1: Gruppenbericht

Montag, 26. Februar 2018, 14:00–14:30, HZO 70

Status, Results and Perspectives of the FRS Ion Catcher — •Samuel Ayet San Andres for the FRS Ion Catcher collaboration — Justus-Liebig-Universität, Gießen — GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt

In the Fragment Separator (FRS) at GSI, exotic nuclei are produced and separated in-flight at relativistic energies. The ions are stopped and thermalized in a cryogenic stopping cell (CSC) and extracted to a Multiple-Reflection Time-of-Flight Mass Spectrometer (MR-TOF-MS) for high precision mass measurements or for isobar and isomer separation.

The FRS Ion Catcher serves as the prototype for the future Ion Catcher at the Low-Energy-Branch (LEB) of the Super-FRS. The masses of more than 40 short-lived isotopes have been measured with accuracies down to the low 10^-7 level. More than 15 isomers with excitation energies down to the few hundreds of keV were observed. A new analysis method suitable for overlapping peaks and low number of events was developed.

An overview of the latest results and proposed experiments to be carried out in the FRS Ion Catcher at GSI during the upcoming beam time period 2018 - 2019 covering mass measurements, beta-delayed neutron emission probabilities and reaction studies with multi-nucleon transfer will be presented.