Status on the proton-capture campaign at GSI

Oct 14, 2020, 6:10 PM


Poster report Section 2. Experimental and theoretical studies of nuclear reactions. Poster session 2 (part 2)


Mr Laszlo Varga (GSI)


Highly-charged stable or radioactive ions can be stored and cooled in a heavy-ion storage ring offering unrivaled capabilities for precision studies for the atomic, nuclear structure, and astrophysics [1]. We have employed the unique feature of the Experimental Storage Ring (ESR) facility at GSI to address astrophysically relevant reactions. In 2009, as a proof-of-concept experiment, the cross section of 96Ru(p,γ) has been successfully investigated [2]. Later, in 2016 the study of the 124Xe(p,γ) reaction has been performed with decelerated fully-ionized 124Xe54+ ions [3]. Using a Double Sided Silicon Strip Detector (DSSSD), introduced directly into the Ultra High Vacuum environment of the storage ring, the 125Cs proton-capture reaction products have been successfully detected on the high energy tail of the Gamow-window for hot, explosive scenarios. Early this year, in March 2020, as the next step in our experiment campaign the first attempt was carried out to measure the proton-capture using a radioactive ion beam.
In this contribution, our precision (p,γ) reaction studies will be introduced highlighting the developments on the used measurement techniques. In addition, a novel approach will be expounded to increase the sensitivity of the identification for (p,γ) products by combining active ion scraping with offline energy selection on the detected ions.

[1] Bosch F et al 2013 Prog. Part. Nucl. Phys. 73 84
[2] Mei B et al 2015 Phys. Rev. C92 035803
[3] Glorius J et al 2019 Phys. Rev. Lett. 122 092701

Primary author


Dr Beatriz Jurado (CENBG) Dr Christoph Langer (FH Aachen University of Applied Science) Dr Claudia Lederer-Woods (University of Edinburgh) Dr Jan Glorius (GSI) Dr Klaus Blaum (Max-Planck-Institut für Kernphysik) Prof. Phil Woods (University of Edinburgh) Dr Rene Reifarth (Goethe Universität Frankfurt) Dr Thomas Davinson (University of Edinburgh) Dr Thomas Stöhlker (GSI) Dr Yuan Ming Xing (GSI) Prof. Yury A. Litvinov (GSI)

Presentation materials