Mainz 2022 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
HK: Fachverband Physik der Hadronen und Kerne
HK 1: Invited Talks I
HK 1.1: Hauptvortrag
Montag, 28. März 2022, 11:00–11:30, HK-H1
A supernova in the lab - Astrophysics with stored, radioactive ions — •Jan Glorius for the E127 collaboration — GSI Helmholtzzentrum, Darmstadt, Germany
Stars are giant nuclear reactors responsible for the synthesis of every element beyond hydrogen and helium. They generate vast amounts of material through nuclear conversions acting over millions of years or in the blink of an eye, e.g., in quiescent stellar burning or in violent star explosions, respectively. Simulations of the internal stellar processes can reproduce the main features of the solar inventory, however the production of many naturally occurring nuclei is still a mystery. This applies in particular to the so-called p-nuclei arising from stellar explosions, for which the models suffer from large nuclear uncertainties.
This contribution will introduce a novel experimental approach to shed light on such eluding cases by providing data on nuclear key reactions to produce strong constraints for explosive nucleosynthesis. The experimental campaign focuses on proton-capture reactions and is based on the production of radioactive ion beams at GSI, which are subsequently accumulated, cooled and decelerated in the heavy ion storage ring ESR. After years of development with stable beams, the first successful measurement has been conducted recently with a radioactive beam, namely 118Te. The talk will discuss the experimental technique in detail, as well as the status and results of the recent and precursor experiments. Furthermore, the plans for an extension of the campaign to the new CRYRING facility at GSI will be presented.