Nuclear Astrophysics in the Storage Ring: Background Suppressed Simultaneous Measurement of (p,γ) and (p,n) Reactions

Varga, L.; Glorius, J.; Aliotta, M.; Blaum, K.; Bott, L.; Brandau, C.; Brückner, B.; Bruno, C.  G.; Chen, X.; Chen, R.; Dababneh, S.; Davinson, T.; Dmytriiev, D.; Dellmann, Sophia Florence; Dillmann, I.; Erbacher, P.; Fiebiger, S.; Forstner, O.; Gaßner, T.; Göbel, K.; Goriely, S.; Griffin, C.  J.; Grisenti, R.  E.; Groothuis, M.; Gumberidze, A.; Gyürky, G.; Heil, M.; Hensch, R.; Hess, R.; Hillenbrand, P. -M.; Hillmann, P.; Hinrichs, O.; Joseph, R.; Jurado, B.; Kausch, T.; Khasawneh, K.; Khodaparast, A.; Kisselbach, T.; Klapper, N.; Kozhuharov, C.; Kurtulgil, D.; Lane, G.  J.; Langer, C.; Leckenby, G.; Lederer-Woods, C.; Lestinsky, M.; Litvinov, Yu  A.; Litvinov, S.; Löher, B.; Lorenz, E.; Lorentz, B.; Marini, P.; Marsh, J.; Menz, E.; Morgenroth, T.; Nguyen, T.  T.; Nolden, F.; Petridis, N.; Popp, U.; Psaltis, A.; Reed, M.; Reifarth, Rene; Sanjari, M.  S.; Savran, D.; Sguazzin, M.; Simon, H.; Sidhu, R.  S.; Slavkovská, Z.; Spillmann, U.; Steck, M.; Stöhlker, T.; Stumm, J.; Surzhykov, A.; Swartz, J.; Szücs, T.; Taremi Zadeh, A.; Thomas, B.; Torilov, S.  Yu.; Törnqvist, H.; Träger, M.; Trageser, C.; Trotsenko, S.; Vescovi, D.; Volknandt, M.; Weick, H.; Weigand, M.; Wolf, C.; Woods, P.  J.; Xing, Y.  M.; Yamaguchi, T.

doi:10.1103/physrevlett.134.082701

Title: Nuclear Astrophysics in the Storage Ring: Background Suppressed Simultaneous Measurement of (p,γ) and (p,n) Reactions

Journal Article · 28 February 2025 · Physical Review Letters

DOI: https://doi.org/10.1103/physrevlett.134.082701 · OSTI ID:2530361

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GSI-Helmholtzzentrum fur Schwerionenforschung, Darmstadt (Germany); Univ. of Edinburgh, Scotland (United Kingdom); Technische Univ. Munchen (Germany); et al.
GSI Helmholtzzentrum für Schwerionenforschung GmbH
University of Edinburgh; ExtreMe Matter Institute EMMI
Max-Planck-Institut für Kernphysik (MPIK)
Goethe Universität, Frankfurt
GSI Helmholtzzentrum für Schwerionenforschung GmbH; Justus-Liebig Universität, Gießen
University of Edinburgh
Institute of Modern Physics
GSI Helmholtzzentrum für Schwerionenforschung GmbH; Institute of Modern Physics
Al-Balqa Applied University
Goethe Univ., Frankfurt (Germany); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
TRIUMF; University of Victoria
GSI Helmholtzzentrum für Schwerionenforschung GmbH; Helmholtz-Institut Jena
Université Libre de Bruxelles
TRIUMF
GSI Helmholtzzentrum für Schwerionenforschung GmbH; Goethe Universität, Frankfurt
HUN-REN Institute for Nuclear Research
LP2I Bordeaux
Australian National University
Goethe Universität, Frankfurt; FH Aachen University of Applied Sciences
TRIUMF; University of British Columbia
Technische Universität Darmstadt
GSI Helmholtzzentrum für Schwerionenforschung GmbH; FH Aachen University of Applied Sciences
University of Edinburgh; University of Surrey
Goethe Universität, Frankfurt; Australian National University
GSI Helmholtzzentrum für Schwerionenforschung GmbH; Helmholtz-Institut Jena; Institut für Optik und Quantenelektronik, Friedrich-Schiller-Universität Jena, Jena, Germany
Physikalisch-Technische Bundesanstalt; Technische Universität Braunschweig
St. Petersburg State University
GSI Helmholtzzentrum für Schwerionenforschung GmbH; Technische Universität Darmstadt
Goethe Universität, Frankfurt; Osservatorio Astronomico d’Abruzzo
Institute of Modern Physics; GSI Helmholtzzentrum für Schwerionenforschung GmbH
Saitama University; University of Tsukuba

We report the application of the new elimination of Rutherford elastic scattering technique for the measurement of proton-induced reaction cross sections utilizing stored ions decelerated to astrophysical energies. This approach results in a background reduction factor of about 1 order of magnitude, enabling the first measurement of a (p, n) cross section in a storage ring. Here, the reaction channels ¹²⁴Xe⁢(p,n) and ¹²⁴Xe⁢(p,γ) have been studied just above the neutron threshold energy. The new data provide valuable constraints for Hauser-Feshbach theory and extrapolation of the (p,γ) cross section to lower energies. Most importantly, for nuclei of limited availability, the method represents a powerful improvement to efficiently study proton-induced reactions at energies within or close to the astrophysical Gamow window, bringing many reaction measurements within reach that were previously inaccessible in the laboratory.

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Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE Laboratory Directed Research and Development (LDRD) Program

Contributing Organization:: SPARC Collaboration

Grant/Contract Number:: 89233218CNA000001

OSTI ID:: 2530361

Report Number(s):: LA-UR--25-22083

Journal Information:: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 8 Vol. 134; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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