First simultaneous measurement of the γ-ray and neutron emission probabilities in inverse kinematics at a heavy-ion storage ring
Artikel i vetenskaplig tidskrift, 2025
The probabilities for γ-ray and particle emission as a function of the excitation energy of a decaying nucleus are valuable observables for constraining the ingredients of the models that describe the deexcitation of nuclei near the particle emission threshold. These models are essential in nuclear astrophysics and applications. In this paper, we have for the first time simultaneously measured the γ-ray and neutron emission probabilities of Pb208. The measurement was performed in inverse kinematics at the Experimental Storage Ring (ESR) of the GSI/FAIR facility, where a Pb208 beam interacted through the Pb208(p,p′) reaction with a hydrogen gas jet target. Instead of detecting the γrays and neutrons emitted by Pb208, we detected the heavy beamlike residues produced after γand neutron emission. These heavy residues were fully separated by a dipole magnet of the ESR and were detected with outstanding efficiencies. The comparison of the measured probabilities with model calculations has allowed us to test and select different descriptions of the γ-ray strength function and the nuclear level density available in the literature.
Författare
Michele Sguazzin
Université de Bordeaux
Beatriz Jurado
Université de Bordeaux
Jérôme Pibernat
Université de Bordeaux
Jacobus Andreas Swartz
Université de Bordeaux
Manfred Grieser
Max-Planck-Gesellschaft
Jan Glorius
GSI Helmholtzzentrum für Schwerionenforschung
Yuri Litvinov
GSI Helmholtzzentrum für Schwerionenforschung
Camille Berthelot
Université de Bordeaux
Bogusław Włoch
Université de Bordeaux
Jörn Adamczewski-Musch
GSI Helmholtzzentrum für Schwerionenforschung
P. Alfaurt
Université de Bordeaux
Pauline Ascher
Université de Bordeaux
Laurent Audouin
Université Paris-Saclay
Bertram Blank
Université de Bordeaux
Klaus Blaum
Max-Planck-Gesellschaft
Benjamin Brückner
Johann Wolfgang Goethe Universität Frankfurt am Main
Sophia Florence Dellmann
Johann Wolfgang Goethe Universität Frankfurt am Main
Iris Dillmann
University of Victoria
TRIUMF
César Domingo-Pardo
Universitat de Valencia
Marc Dupuis
Le Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA)
Université Paris-Saclay
Philipp Erbacher
Johann Wolfgang Goethe Universität Frankfurt am Main
Mathieu Flayol
Université de Bordeaux
Oliver Forstner
Helmholtz
David Freire-Fernández
Universität Heidelberg
Max-Planck-Gesellschaft
Mathias Gerbaux
Université de Bordeaux
Jerome Giovinazzo
Université de Bordeaux
Stéphane Grévy
Université de Bordeaux
Christopher Griffin
TRIUMF
Alexandre Gumberidze
Helmholtz
Sebastian Heil
Johann Wolfgang Goethe Universität Frankfurt am Main
Andreas Heinz
Chalmers, Fysik, Subatomär, högenergi- och plasmafysik
Regina Hess
Helmholtz
Deniz Kurtulgil
Johann Wolfgang Goethe Universität Frankfurt am Main
Nikolaus Kurz
Helmholtz
Guy Leckenby
TRIUMF
University of British Columbia (UBC)
Sergey Litvinov
Helmholtz
Bernd Lorentz
Helmholtz
Vincent Méot
Université Paris-Saclay
Le Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA)
Julien Michaud
IPN Orsay
Université de Bordeaux
S. Pérard
Université de Bordeaux
Nikolaos Petridis
Helmholtz
Ulrich Popp
Helmholtz
Diego Ramos
Grand Accélérateur National d'Ions Lourds (GANIL)
René Reifarth
Los Alamos National Laboratory
Johann Wolfgang Goethe Universität Frankfurt am Main
Mathieu Roche
Université de Bordeaux
Shahab Sanjari
Helmholtz
Fachhochschule Aachen
Ragandeep Singh Sidhu
University of Edinburgh
Max-Planck-Gesellschaft
Helmholtz
Uwe Spillmann
Helmholtz
Markus Steck
Helmholtz
Th Stöhlker
Helmholtz
Benedikt Thomas
Université de Bordeaux
Loïc Thulliez
Université Paris-Saclay
Maud Versteegen
Université de Bordeaux
Physical Review C
24699985 (ISSN) 24699993 (eISSN)
Vol. 111 2 024614Hur bildas tunga grundämnen i krockar mellan neutronstjärnor?
Knut och Alice Wallenbergs Stiftelse (2020.0076), 2021-01-01 -- 2025-12-31.
Ämneskategorier (SSIF 2025)
Subatomär fysik
DOI
10.1103/PhysRevC.111.024614