@article{f935401e396e48ab8e677b1caa071876,
title = "Constraining the 12C+12C astrophysical S-factors with the 12C+13C measurements at very low energies",
abstract = "We use an underground counting lab with an extremely low background to perform an activity measurement for the [Formula presented] system with energies down to [Formula presented] MeV, at which the 12C(13C,p)24Na cross section is found to be 0.22(7) nb. The [Formula presented] fusion cross section is derived with a statistical model calibrated using experimental data. Our new result of the [Formula presented] 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 [Formula presented] fusion cross sections at stellar energies.",
keywords = "Astrophysical S-factor, Extrapolation models, Fusion cross section, Hindrance",
author = "Zhang, \{N. T.\} and Wang, \{X. Y.\} and D. Tudor and B. Bucher and I. Burducea and H. Chen and Chen, \{Z. J.\} and D. Chesneanu and Chilug, \{A. I.\} and Gasques, \{L. R.\} and Ghita, \{D. G.\} and C. Gomoiu and K. Hagino and S. Kubono and Li, \{Y. J.\} and Lin, \{C. J.\} and Lin, \{W. P.\} and R. Margineanu and A. Pantelica and Stefanescu, \{I. C.\} and M. Straticiuc and Tang, \{X. D.\} and L. Trache and Umar, \{A. S.\} and Xin, \{W. Y.\} and Xu, \{S. W.\} and Y. Xu",
note = "Funding Information: X.D.T. thanks H. Esbensen, C.Y. Wong, A. Mukhamedzhanov, D.Y. Pang, X. Fang, W.P. Tan, S.F. Zhu, D.L. Fang and X.D. Xu for the helpful discussions, A. Tumino for providing the THM data and Anya Tang for proofreading. This project is supported in part by the National Key Research and Development Program ( MOST 2016YFA0400501 ) from the Ministry of Science and Technology of China and the grants PN 16420102 and PN-III-P4-ID-PCE-2016-0743 NUCASTRO2 from the Romanian Ministry for Research and Innovation . X.D.T. and N.T.Z. acknowledge supports from the National Natural Science Foundation of China under Grants No. 11021504 , No. 11321064 , No. 11475228 , No. 11490564 , and No. 11405226 . X.D.T. also acknowledges supports from the key research program ( XDPB09-2 ) and 100 talents Program of the Chinese Academy of Sciences . B.B. and S.U. acknowledge support by the U.S. DOE under Contract No. DE-AC07-05ID14517 and Grant No. DE-SC0013847 . Funding Information: X.D.T. thanks H. Esbensen, C.Y. Wong, A. Mukhamedzhanov, D.Y. Pang, X. Fang, W.P. Tan, S.F. Zhu, D.L. Fang and X.D. Xu for the helpful discussions, A. Tumino for providing the THM data and Anya Tang for proofreading. This project is supported in part by the National Key Research and Development Program (MOST 2016YFA0400501) from the Ministry of Science and Technology of China and the grants PN 16420102 and PN-III-P4-ID-PCE-2016-0743 NUCASTRO2 from the Romanian Ministry for Research and Innovation. X.D.T. and N.T.Z. acknowledge supports from the National Natural Science Foundation of China under Grants No. 11021504, No. 11321064, No. 11475228, No. 11490564, and No. 11405226. X.D.T. also acknowledges supports from the key research program (XDPB09-2) and 100 talents Program of the Chinese Academy of Sciences. B.B. and S.U. acknowledge support by the U.S. DOE under Contract No. DE-AC07-05ID14517 and Grant No. DE-SC0013847. Publisher Copyright: {\textcopyright} 2019 The Author(s)",
year = "2019",
month = dec,
day = "27",
doi = "10.1016/j.physletb.2019.135170",
language = "English",
volume = "801",
journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
issn = "0370-2693",
publisher = "Elsevier B.V.",
}