| Autor: |
Monpribat, E., Choplin, A., Martinet, S., Courtin, S., Heine, M., Adsley, P., Curien, D., Dumont, T., Ekström, S., Jenkins, D.G., Moukaddam, M., Nippert, J., Tsiatsiou, S., Meynet, G. |
| Předmět: |
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| Zdroj: |
EPJ Web of Conferences; 3/22/2023, Vol. 279, p1-5, 5p |
| Abstrakt: |
Among the reactions driving stellar evolution during carbon burning, 12C + 12C fusion provides the key ingredients. This system reveals many resonances, but also regions with suppressed fusion cross-sections. The reaction was recently measured by the STELLA collaboration utilizing the gammaparticle coincidence technique for precise cross-section measurements reaching down to the Gamow window of massive stars. From the experimental data, reaction rates were determined by approximating a hindrance parametrization and by adding on top a resonance at the lowest measured energy. The impact of these reaction rates on the evolution of massive stars was explored with models of 12 and 25 M⊙ using the stellar evolution code GENEC, and a detailed study of the resulting nucleosynthesis with a 1454 elements network was performed. The sensitivity of the STELLA experimental cross-sections on the temperature range for C-burning for the stellar models studied were presented. The final abundances and their impacts on stellar evolution were discussed. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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