Sophia Florence Dellmann
(Goethe University Frankfurt)
By combining two unique facilities at GSI (Helmholtz Centre for Heavy Ion Research),
the fragment separator (FRS) and the experimental storage ring (ESR), the first direct measurement of a proton capture reaction of a stored radioactive isotope has been accomplished. The combination of sharp ion energy, ultra-thin internal gas target, and the ability to adjust energy of the beam in the ring enables precise, energy-differentiated measurements of the (p,𝛾)-cross-sections. Our new results provide a sensitive method for measuring (p,𝛾) and (p,n) reactions relevant for nucleosynthesis 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 was measured at energies of astrophysical interest. The heavy ions were stored with energies of 6 MeV/nucleon and 7 MeV/nucleon and interacted with a hydrogen jet target. The produced 119I ions were detected with double-sided silicon strip detectors. The radiative recombination process of the fully stripped 118Te ions and electrons from the hydrogen target was used as a luminosity monitor.
These measurements follow a proof-of-principle experiment which was performed in 2016 to validate the method on the stable isotope 124Xe [1].
An overview of the experimental method and preliminary results from the ongoing analysis will be presented.
[1] J. Glorius et al., Phys. Rev. Lett. 122, 092701 (2019)
Sophia Florence Dellmann
(Goethe University Frankfurt)
Alexandre Gumberidze
Andrey Surzhykov
Bastian Löher
(GSI)
Beatriz JURADO APRUZZESE
(CENBG)
Benjamin Brueckner
Bernd Alfred Lorenz
(GSI)
Carlo Bruno
(The University of Edinburgh)
Christoph Langer
(FH Aachen, GSI)
Christoph Scheidenberger
(GSI)
Christopher Griffin
Christophor Kozhuharov
(GSI)
Claudia Lederer-Woods
(The University of Edinburgh (GB))
Dr
Diego Vescovi
(Goethe University Frankfurt)
Dmytro Dmytriev
(GSI)
Emma Haettner
(GSI Helmholtzzentrum für Schwerionenforschung GmbH)
Enis Lorenz
(Technische Universität Darmstadt)
Esther Menz
(GSI)
Mr
Guy Leckenby
(TRIUMF)
Hans Geissel
(GSI)
Hans Toshihide Tornqvist
(Chalmers University of Technology (SE))
Helmut Weick
(GSI Helmholtzzentrum für Schwerionenforschung)
Iris Dillmann
Ivan Kulikov
(GSI - Helmholtzzentrum fur Schwerionenforschung GmbH (DE))
Jacobus Andreas Swartz
(CENBG)
Jan Glorius
Jerome Pibernat
Mr
Jordan Marsh
(University of Edinburgh)
Dr
Kafa Al-Khasawneh
(Goethe University Frankfurt)
Kathrin Gobel
(Goethe University Frankfurt (DE))
L Varga
(GSI Helmholtzzentrum für Schwerionenforschung GmbH)
Lukas Bott
(Goethe University Frankfurt)
Marialuisa Aliotta
(University of Edinburgh)
Mario Weigand
(Goethe University Frankfurt)
Markus Steck
Michael Heil
(GSI - Helmholtzzentrum fur Schwerionenforschung GmbH (DE))
Michael Lestinsky
(GSI Darmstadt)
Michele Sguazzin
(CENBG)
Nikolaos Petridis
(GSI Helmholtzzentrum)
Oliver Forstner
(Friedrich-Schiller-Universitaet Jena (DE))
P J Woods
(University of Edinburgh)
Philipp Erbacher
(Goethe University Frankfurt)
Pierre-Michel Hillenbrand
(GSI)
Ragandeep Singh Sidhu
Regina Heß
(GSI)
Rene Reifarth
(Goethe University Frankfurt (DE))
Robert Grisenti
(GSI)
Ronald Joseph
(GSI)
Rui-Jiu Chen
(Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg, Germany)
Sergey Litvinov
(GSI)
Shahab Sanjari
(GSI Darmstadt)
Siegbert Hagmann
(GSI)
Takayuki Yamaguchi
(Saitama University (JP))
Thanassis Psaltis
Thomas Davinson
(The University of Edinburgh (GB))
Thomas Stoehlker
(GSI)
Timo Dickel
Tino Morgenroth
(GSI)
Ulrich Popp
(GSI)
Uwe Spillmann
(GSI)
Yuanming Xing
(GSI)
Yuri Litvinov
(GSI, Darmstadt)
