EPJ Web Conf.
Volume 279, 2023Nuclear Physics in Astrophysics – X (NPA-X 2022)
|Number of page(s)||5|
|Published online||22 March 2023|
Proton capture on stored radioactive 118Te ions
1 Goethe University, Frankfurt, Germany
2 GSI Helmholtzzentrum für Schwerionenforschung Darmstadt, Germany
3 School of Physics and Astronomy, University of Edinburgh, United Kingdom
4 CAS Key Laboratory of High Precision Nuclear Spectroscopy, Lanzhou, China
5 Justus-Liebig-University Gießen, Germany
6 TRIUMF, Canada
7 Ruprecht-Karls-University Heidelberg, Germany
8 Max-Planck-Institut für Kernphysik, Heidelberg, Germany
9 Helmholtz-Institut Jena, Germany
10 LP2I Bordeaux, CNRS/IN2P3-Université de Bordeaux, Gradignan, France
11 Aachen University of Applied Sciences, Aachen, Germany
12 TU Darmstadt, Germany
13 Physikalisch Technische Bundesanstalt Braunschweig, Germany
14 Braunschweig University of Technology, Germany
15 Saitama University, Saitama, Japan
* e-mail: firstname.lastname@example.org
Published online: 22 March 2023
Experimental determination of the cross sections of proton capture on radioactive nuclei is extremely difficult. Therefore, it is of substantial interest for the understanding of the production of the p-nuclei. For the first time, a direct measurement of proton-capture cross sections on stored, radioactive ions became possible in an energy range of interest for nuclear astrophysics. The experiment was performed at the Experimental Storage Ring (ESR) at GSI by making use of a sensitive method to measure (p,γ) and (p,n) reactions in inverse kinematics. These reaction channels are of high relevance for the nucleosyn-thesis processes in supernovae, which are among the most violent explosions in the universe and are not yet well understood. The cross section of the 118Te(p,γ) reaction has been measured at energies of 6 MeV/u and 7 MeV/u. The heavy ions interacted with a hydrogen gas jet target. The radiative recombination process of the fully stripped 118Te ions and electrons from the hydrogen target was used as a luminosity monitor. An overview of the experimental method and preliminary results from the ongoing analysis will be presented.
© The Authors, published by EDP Sciences, 2023
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