Experimental measurement of the 12C+16O fusion cross sections at astrophysical energies
oleh: 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: | Article |
|---|---|
| Diterbitkan: | EDP Sciences 2018-01-01 |
Deskripsi
The total cross sections of the 12C+16O 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 12C+16O reaction, and a decreasing trend of its S-factor towards low energies is found.