First direct measurement of 12C(12C,n)23Mg at stellar energies

Xiao Dong Tang, B. Bucher, Xiao Fang, A. Heger, S. Almaraz-Calderon, A. Alongi, A. D. Ayangeakaa, M. Beard, Andreas Best, J. Browne, C. Cahillane, M. Couder, R. J. DeBoer, A. Kontos, L. Lamm, Yunju Li, Alexander Makenzie Long, Wenting Lu, Shawn M Lyons, M. NotaniD. Patel, N. Paul, M. Pignatari, Arthur L Roberts, Daniel P Robertson, Karl J Smith, E. Stech, R. Talwar, Wanpeng Tan, M. Wiescher, S. E. Woosley

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Neutrons produced by the carbon fusion reaction 12C(12C,n)23Mg play an important role in stellar nucleosynthesis. Past studies have shown large discrepancies between experimental data and theory, leading to an uncertain cross section extrapolation at astrophysical energies. We present the first direct measurement which 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 which 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.

Original languageEnglish
Title of host publicationEPJ Web of Conferences
Number of pages6
Publication statusPublished - 12 Feb 2016
EventInternational Symposium on Origin of Matter and Evolution of Galaxies (OMEG) 2015 - Prime Hotel, Beijing, China
Duration: 24 Jun 201527 Jun 2015
Conference number: 13th


ConferenceInternational Symposium on Origin of Matter and Evolution of Galaxies (OMEG) 2015
Abbreviated titleOMEG 2015
Internet address
  • First direct measurement of 12C(12C,n)23Mg 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., & 11 othersPatel, D., Paul, N., Pignatari, M., Roberts, A., Robertson, D., Smith, K., Stech, E., Talwar, R., Tan, W. P., Wiescher, M. & Woosley, S. E., 2015, In: Physical Review Letters. 114, 25, p. 1-6 6 p., 251102.

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    21 Citations (Scopus)

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