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HK: Fachverband Physik der Hadronen und Kerne

HK 62: Invited Talks III

HK 62.3: Hauptvortrag

Freitag, 14. März 2025, 12:00–12:30, Kurt-Alder HS Chemie

Precision experiments with undressed radioactive atoms — •Yury Litvinov — GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany

Storage of freshly produced secondary particles in a storage ring is a straightforward way to achieve the most efficient use of the rare species as it allows for using the same precious secondary ion multiple times. Employing storage rings for precision physics experiments with highly-charged ions (HCI) at the intersection of atomic, nuclear, plasma and astrophysics is a rapidly developing field of research. The number of physics cases is enormous. In the focus of this presentation will be the most recent results obtained at the heavy-ion rings at GSI in Germany, at IMP in China, and at RIKEN in Japan.

Apart from routinely conducted precision mass measurements of short-lived rare nuclei, storage rings are utilized for investigations of radioactive decays of mass-resolved HCIs. Decay properties of HCIs can be very different from the ones known in neutral atoms: Specific decay channels can be blocked or new ones can become open. Furthermore, in-ring nuclear reaction studies profit from the beam cooling combined with internal ultra-thin ultra-pure windowless gas targets, thereby achieving high angular and energy resolution.

The experiments performed at the operating storage rings will be put in the context of the research programs in a worldwide context, where, thanks to fascinating results obtained, a number of new projects is planned.

Keywords: mass spectrometry; heavy-ion storage rings; highly charged ions; basic nuclear properties; nuclear astrophysics