First Direct Measurement of C12(C12,n)Mg23 at Stellar Energies

Bucher, B.; Tang, X. D.; Fang, X.; Heger, A.; Almaraz-Calderon, S.; Alongi, A.; Ayangeakaa, A. D.; Beard, M.; Best, A.; Browne, J.; Cahillane, C.; Couder, M.; deBoer, R. J.; Kontos, A.; Lamm, L.; Li, Y. J.; Long, A.; Lu, W.; Lyons, S.; Notani, M.; Patel, D.; Paul, N.; Pignatari, M.; Roberts, A.; Robertson, D.; Smith, K.; Stech, E.; Talwar, R.; Tan, W. P.; Wiescher, M.; Woosley, S. E.

doi:10.1103/PhysRevLett.114.251102

Title: First Direct Measurement of ${}^{12}C ({}^{12}C, n) {}^{23}{Mg}$ at Stellar Energies

Journal Article · Thu Jun 25 00:00:00 EDT 2015 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.114.251102· OSTI ID:1234609

Bucher, B. ^[1]; Tang, X. D. ^[2]; Fang, X. ^[3]; Heger, A. ^[4]; Almaraz-Calderon, S. ^[3]; Alongi, A. ^[3]; Ayangeakaa, A. D. ^[3]; Beard, M. ^[3]; Best, A. ^[3]; Browne, J. ^[3]; Cahillane, C. ^[3]; Couder, M. ^[3]; deBoer, R. J. ^[3]; Kontos, A. ^[3]; Lamm, L. ^[3]; Li, Y. J. ^[5]; Long, A. ^[3]; Lu, W. ^[3]; Lyons, S. ^[3]; Notani, M. ^[3] more »

Univ. of Notre Dame, IN (United States). Inst. for Structure and Nuclear Astrophysics, Joint Inst. for Nuclear Astrophysics; Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Chinese Academy of Sciences (CAS), Lanzhou (China). Inst. of Modern Physics
Univ. of Notre Dame, IN (United States). Inst. for Structure and Nuclear Astrophysics, Joint Inst. for Nuclear Astrophysics
Monash Univ., Melbourne, VIC (Australia). Monash Center for Astrophysics, School of Physics and Astronomy; Shanghai Jiao-Tong Univ., Shanghai (China). Dept. of Physics and Astronomy; Univ. of Minnesota, Minneapolis, MN (United States). School of Physics and Astronomy
China Inst. of Atomic Energy, Beijing (China)
Hungarian Academy of Sciences, Budapest (Hungary). Konkoly Observatory, Research Centre for Astronomy and Earth Sciences; Univ. of Basel (Switzerland). Dept. of Physics
Univ. of California, Santa Cruz, CA (United States). Dept. of Astronomy and Astrophysics

Neutrons produced by the carbon fusion reaction ¹²C(¹²C,n)²³Mg play an important role in stellar nucleosynthesis. However, past studies have shown large discrepancies between experimental data and theory, leading to an uncertain cross section extrapolation at astrophysical energies. Here in this paper, we present the first direct measurement that extends deep into the astrophysical energy range along with a new and improved extrapolation technique based on experimental data from the mirror reaction ¹²C(¹²C,p)²³Na . The new reaction rate has been determined with a well-defined uncertainty that exceeds the precision required by astrophysics models. Using our constrained rate, we find that ¹²C (¹²C,n)²³Mg is crucial to the production of Na and Al in pop-III pair instability supernovae. It also plays a nonnegligible role in the production of weak s -process elements, as well as in the production of the important galactic γ-ray emitter ⁶⁰Fe.

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Research Organization:: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE; National Science Foundation (NSF); National Natural Science Foundation of China (NSFC)

Grant/Contract Number:: AC52-07NA27344; PHY-0758100; PHY-0822648; 11021504; 11321064; 11475228; 11490564; FT120100363

OSTI ID:: 1234609

Alternate ID(s):: OSTI ID: 1198533

Report Number(s):: LLNL-JRNL-668674; PRLTAO

Journal Information:: Physical Review Letters, Vol. 114, Issue 25; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 19 works

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Mean-field description of heavy-ion scattering at low energies and fusion Khoa, Dao T.; Chien, Le Hoang; Cuong, Do Cong Nuclear Science and Techniques, Vol. 29, Issue 12 https://doi.org/10.1007/s41365-018-0517-7	journal	November 2018
An efficient method for mapping the $${}^{12}\hbox {C}+{}^{12}\hbox {C}$$12C+12C molecular resonances at low energies Tang, Xiao-Dong; Ma, Shao-Bo; Fang, Xiao Nuclear Science and Techniques, Vol. 30, Issue 8 https://doi.org/10.1007/s41365-019-0652-9	journal	July 2019
Spectrum tailoring of low charge-to-mass ion beam by the triple-stage acceleration mechanism Wang, W. P.; Shen, B. F.; Zhang, H. Physics of Plasmas, Vol. 26, Issue 4 https://doi.org/10.1063/1.5088548	journal	April 2019
Nuclear physics of the outer layers of accreting neutron stars Meisel, Zach; Deibel, Alex; Keek, Laurens Journal of Physics G: Nuclear and Particle Physics, Vol. 45, Issue 9 https://doi.org/10.1088/1361-6471/aad171	journal	July 2018
Nuclear Physics of the Outer Layers of Accreting Neutron Stars Meisel, Zach; Deibel, Alex; Keek, Laurens arXiv https://doi.org/10.48550/arxiv.1807.01150	text	January 2018

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