Precise measurement of nuclear interaction cross sections towards neutron-skin determination with R3B

The R 3 B (Reactions with Relativistic Radioactive Beams) experiment as a major instrument of the NUSTAR collaboration for the research facility FAIR in Darmstadt is designed for kinematically complete studies of reactions with high-energy radioactive beams. Part of the broad physics program of R 3 B is to constrain the asymmetry term in the nuclear equation-of-state and hence improve the description of highly asymmetric nuclear matter (e.g., in neutron stars). For a precise determination of the neutron-skin thickness – an observable which is directly correlated with the symmetry energy in theoretical calculations – by measuring absolute fragmentation cross sections, it is essential to quantify the uncertainty and challenge the reaction model under stable conditions. During the successful FAIR Phase-0 campaign of R 3 B, we precisely measured the energy dependence of total interaction cross sections in 12 C+ 12 C collisions, for a direct comparison with calculations based on the eikonal reaction theory.

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Journal
Nuclear Physics A
Published
2025-01-27
DOI
https://doi.org/10.1016/j.nuclphysa.2025.123022
Primary Topic
Nuclear Physics and Applications
Type
article
Field-Weighted Citation Impact
0.00

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article

Precise measurement of nuclear interaction cross sections towards neutron-skin determination with R3B

A. Corsi, J. A. Dueñas, J. Park, S. Storck-Dutine et al.
Nuclear Physics A
Nuclear Physics and Applications
article

Precise measurement of nuclear interaction cross sections towards neutron-skin determination with R3B

A. Corsi, J. A. Dueñas, J. Park, S. Storck-Dutine, K. Göbel, Y. Ayyad, S. Murillo Morales, H. Törnqvist, P. Russotto, A. Heinz, T. Hensel, O. Kiselev, Z. Elekes, D. Kurtulgil, Yu. A. Litvinov, M. Trimarchì, Y. L. Sun, Liam Atkins, O. Tengblad, R. Reifarth, T. Jenegger, B. Gnoffo, B. Brückner, A. Jedele, M. Holl, I. Gašparić, A. Gillibert, V. Wagner, H. Simon, D. Galaviz, T. Aumann, J. L. Rodríguez-Sánchez, B. Löher, H. Johansson, D. Cortina‐Gil, L. Trache, A. Stott, D. Körper, S. Paschalis, E. Galiana, M. J. G. Borge, D. Kresan, Sonia Escribano Rodriguez, J. Benlliure, L. Bott, A. Horvat, I. Lihtar, A. Falduto, J. Cederkall, T. Pohl, M. Heil, A. Graña-González, P. Klenze, T. Nilsson, L. Atar, C. Caesar, R. Taniuchi, D. González Caamaño, E. Кudaibergenova, M. Labiche, M. Petri, E. Casarejos, Miguel Ángel Álvarez Feijoo, E. Geraci, H. Scheit, B. Jonson, L. Rose, G. Bruni, Tahani Almusidi, A. Obertelli, D. Jelavić Malenica, D. Rossi, A. Frotscher, R. Gernhäuser, H. Álvarez-Pol, P. Cabanelas, J. Mayer, S. Pirrone, C. A. Bertulani, D. Savran, G. García-Jiménez, V. Panin, P. Teubig, E. Nácher, L. Ponnath, A. Kelić-Heil, M. Feijoo Fontan, T. Kröll, M. Duer, N. Kalantar-Nayestanaki, N. Mozumdar, A. Perea, L.M. Fonseca, C. Langer, H. B. Rhee, A.-L. Hartig, F. Wamers, K. Boretzky, C. Sürder
article en

Abstract

The R 3 B (Reactions with Relativistic Radioactive Beams) experiment as a major instrument of the NUSTAR collaboration for the research facility FAIR in Darmstadt is designed for kinematically complete studies of reactions with high-energy radioactive beams. Part of the broad physics program of R 3 B is to constrain the asymmetry term in the nuclear equation-of-state and hence improve the description of highly asymmetric nuclear matter (e.g., in neutron stars). For a precise determination of the neutron-skin thickness – an observable which is directly correlated with the symmetry energy in theoretical calculations – by measuring absolute fragmentation cross sections, it is essential to quantify the uncertainty and challenge the reaction model under stable conditions. During the successful FAIR Phase-0 campaign of R 3 B, we precisely measured the energy dependence of total interaction cross sections in 12 C+ 12 C collisions, for a direct comparison with calculations based on the eikonal reaction theory.

Nuclear Physics AVol. 1056
Goethe University Frankfurt (DE), GSI Helmholtz Centre for Heavy Ion Research (DE), Lund University (SE), Universidade de Santiago de Compostela (ES), East Texas A&M University (US), Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR), CEA Paris-Saclay - Etablissement de Saclay (FR), King Saud University (SA), Technische Universität Darmstadt (DE), CEA Paris-Saclay (FR), Instituto de Estructura de la Materia (ES), Institut de Recherche sur les Lois Fondamentales de l'Univers (FR), University of York (GB), Universidade de Vigo (ES), Technical University of Munich (DE), Chalmers University of Technology (SE)
U.S. Department of Energy, Royal Society, Deutsche Forschungsgemeinschaft, Bundesministerium für Bildung und Forschung, Vetenskapsrådet, Hrvatska Zaklada za Znanost, Technische Universität Darmstadt, Emberi Eroforrások Minisztériuma, Institute for Basic Science, Xunta de Galicia, Science and Technology Facilities Council, Fundação para a Ciência e a Tecnologia, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, GSI Helmholtzzentrum für Schwerionenforschung, Agencia Estatal de Investigación, ExtreMe Matter Institute, GSI Helmholtzzentrum für Schwerionenforschung
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Nuclear Physics and Applications
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