Constraining the 12C+12C fusion cross section for astrophysics

Bucher, B. and Fang, X. and Tang, X. D. and Tan, W. P. and Almaraz-Calderon, S. and Alongi, A. and Ayangeakaa, A. D. and Beard, M. and Best, A. and Browne, J. and Cahillane, C. and Couder, M. and Dahlstrom, E. and Davies, P. and deBoer, R. and Kontos, A. and Lamm, L. and Long, A. and Lu, W. and Lyons, S. and Ma, C. and Moncion, A. and Notani, M. and Patel, D. and Paul, N. and Pignatari, M. and Roberts, A. and Robertson, D. and Smith, K. and Stech, E. and Talwar, R. and Thomas, S. and Wiescher, M.. (2015) Constraining the 12C+12C fusion cross section for astrophysics. In: CGS15 - Capture Gamma-Ray Spectroscopy and Related Topics, 93. 03009.

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The 12 C+ 12 C reaction is one of the single most important nuclear reactions in astrophysics. It strongly influences late evolution of massive stars as well as the dynamics of type Ia supernovae and x-ray superbursts. An accurate estimation of the cross section at relevant astrophysical energies is extremely important for modeling these systems. However, the situation is complicated by the unpredictable resonance structure observed at higher energies. Two recent studies at Notre Dame have produced results which help reduce the uncertainty associated with this reaction. The first uses correlations with the isotope fusion systems, 12 C+ 13 C and 13 C+ 13 C, to establish an upper limit on the resonance strengths in 12 C+ 12 C. The other focuses on the specific channel 12 C+ 12 C→ 23 Mg+n and its low-energy measurement and extrapolation which is relevant to s-process nucleosynthesis. The results from each provide important constraints for astrophysical models.
Faculties and Departments:05 Faculty of Science > Departement Physik > Former Organization Units Physics > Theoretische Physik Astrophysik (Thielemann)
UniBasel Contributors:Pignatari, Marco
Item Type:Conference or Workshop Item, refereed
Conference or workshop item Subtype:Conference Paper
Publisher:EDP Sciences
Series Name:EPJ Web of Conferences. Nuclear Astrophysics
Note:Publication type according to Uni Basel Research Database: Conference paper
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Last Modified:28 Jun 2023 08:11
Deposited On:28 Jun 2023 08:11

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