Experimental measurement of the 12 C+ 16 O fusion cross sections at astrophysical energies

• Published in: EPJ Web of conferences Vol. 178; p. 4008
• Main Authors: Fang, X., Tan, W. P., Beard, M., deBoer, R. J., Gilardy, G., Jung, H., Liu, Q., Lyons, S., Robertson, D., Setoodehnia, K., Seymour, C., Stech, E., Vande Kolk, B., Wiescher, M., de Souza, R., Hudan, S., Singh, V., Tang, X. D., Uberseder, E.
• Format: Journal Article
• Language: English
• Published: 2018
• ISSN: 2100-014X; 2100-014X
• DOI: 10.1051/epjconf/201817804008

The total cross sections of the
12
C+
16
O fusion have been experimentally determined at low energies to investigate the role of this reaction during late stellar evolution burning phases. A high-intensity oxygen beam was produced by the 5MV pelletron accelerator at the University of Notre Dame impinging on a thick ultra-pure graphite target. Protons and
γ
-rays were measured simultaneously in the center-of-mass energy range from 3.64 to 5.01 MeV, using strip silicon and HPGe detectors. Statistical model calculations were employed to interpret the experimental results. A new broad resonance-like structure is observed for the
12
C+
16
O reaction, and a decreasing trend of its S-factor towards low energies is found.