Physics Letters B (Feb 2020)
Constraining the 12C+12C astrophysical S-factors with the 12C+13C measurements at very low energies
- N.T. Zhang,
- X.Y. Wang,
- D. Tudor,
- B. Bucher,
- I. Burducea,
- H. Chen,
- Z.J. Chen,
- D. Chesneanu,
- A.I. Chilug,
- L.R. Gasques,
- D.G. Ghita,
- C. Gomoiu,
- K. Hagino,
- S. Kubono,
- Y.J. Li,
- C.J. Lin,
- W.P. Lin,
- R. Margineanu,
- A. Pantelica,
- I.C. Stefanescu,
- M. Straticiuc,
- X.D. Tang,
- L. Trache,
- A.S. Umar,
- W.Y. Xin,
- S.W. Xu,
- Y. Xu
Affiliations
- N.T. Zhang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
- X.Y. Wang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
- D. Tudor
- Horia Hulubei National Institute of Physics and Nuclear Engineering, IFIN-HH, Magurele 077125, Romania; Doctoral School of Physics, University of Bucharest, Bucuresti-Magurele 077125, Romania; Corresponding authors.
- B. Bucher
- Idaho National Laboratory, Idaho Falls, ID 83415, USA
- I. Burducea
- Horia Hulubei National Institute of Physics and Nuclear Engineering, IFIN-HH, Magurele 077125, Romania
- H. Chen
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
- Z.J. Chen
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
- D. Chesneanu
- Horia Hulubei National Institute of Physics and Nuclear Engineering, IFIN-HH, Magurele 077125, Romania
- A.I. Chilug
- Horia Hulubei National Institute of Physics and Nuclear Engineering, IFIN-HH, Magurele 077125, Romania; Doctoral School of Physics, University of Bucharest, Bucuresti-Magurele 077125, Romania
- L.R. Gasques
- Department de Física Nuclear, Instituto de Física da Universidade de São Paulo, São Paulo, Brazil
- D.G. Ghita
- Horia Hulubei National Institute of Physics and Nuclear Engineering, IFIN-HH, Magurele 077125, Romania
- C. Gomoiu
- Horia Hulubei National Institute of Physics and Nuclear Engineering, IFIN-HH, Magurele 077125, Romania
- K. Hagino
- Department of Physics, Tohoku University, Sendai 980-8578, Japan; Research Center for Electron Photon Science, Tohoku University, 1-2-1 Mikamine, Sendai 982-0826, Japan
- S. Kubono
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; RIKEN Nishina Center, RIKEN, 2-1 Hirosawa, Saitama 351-0198, Japan
- Y.J. Li
- China Institute of Atomic Energy, Beijing 102413, China
- C.J. Lin
- China Institute of Atomic Energy, Beijing 102413, China
- W.P. Lin
- Key Laboratory of Radiation Physics and Technology of the Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China
- R. Margineanu
- Horia Hulubei National Institute of Physics and Nuclear Engineering, IFIN-HH, Magurele 077125, Romania
- A. Pantelica
- Horia Hulubei National Institute of Physics and Nuclear Engineering, IFIN-HH, Magurele 077125, Romania
- I.C. Stefanescu
- Horia Hulubei National Institute of Physics and Nuclear Engineering, IFIN-HH, Magurele 077125, Romania; Doctoral School of Physics, University of Bucharest, Bucuresti-Magurele 077125, Romania
- M. Straticiuc
- Horia Hulubei National Institute of Physics and Nuclear Engineering, IFIN-HH, Magurele 077125, Romania
- X.D. Tang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China; Joint department for nuclear physics, Lanzhou University and Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; Corresponding authors.
- L. Trache
- Horia Hulubei National Institute of Physics and Nuclear Engineering, IFIN-HH, Magurele 077125, Romania; Corresponding authors.
- A.S. Umar
- Department of Physics and Astronomy, Vanderbilt University, Nashville, TN 37235, USA
- W.Y. Xin
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
- S.W. Xu
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China; School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
- Y. Xu
- Extreme Light Infrastructure-Nuclear Physics, RO-077125, Magurele, Romania
- Journal volume & issue
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Vol. 801
Abstract
We use an underground counting lab with an extremely low background to perform an activity measurement for the C12+13C system with energies down to Ec.m.=2.323 MeV, at which the 12C(13C,p)24Na cross section is found to be 0.22(7) nb. The C12+13C fusion cross section is derived with a statistical model calibrated using experimental data. Our new result of the C12+13C fusion cross section is the first decisive evidence in the carbon isotope systems which rules out the existence of the astrophysical S-factor maximum predicted by the phenomenological hindrance model, while confirming the rising trend of the S-factor towards lower energies predicted by other models, such as CC-M3Y+Rep, DC-TDHF, KNS, SPP and ESW. After normalizing the model predictions with our data, a more reliable upper limit is established for the C12+12C fusion cross sections at stellar energies. Keywords: Fusion cross section, Astrophysical S-factor, Extrapolation models, Hindrance
