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Reaction rate for carbon burning in massive stars
- Source :
- Phys.Rev.C, Phys.Rev.C, 2018, 97 (1), pp.012801. ⟨10.1103/PhysRevC.97.012801⟩
- Publication Year :
- 2018
- Publisher :
- HAL CCSD, 2018.
-
Abstract
- International audience; Carbon burning is a critical phase for nucleosynthesis in massive stars. The conditions for igniting this burning stage, and the subsequent isotope composition of the resulting ashes, depend strongly on the reaction rate for C12+C12 fusion at very low energies. Results for the cross sections for this reaction are influenced by various backgrounds encountered in measurements at such energies. In this paper, we report on a new measurement of C12+C12 fusion cross sections where these backgrounds have been minimized. It is found that the astrophysical S factor exhibits a maximum around Ecm=3.5–4.0 MeV, which leads to a reduction of the previously predicted astrophysical reaction rate.
- Subjects :
- Physics
Fusion
Isotope
010308 nuclear & particles physics
S-factor
chemistry.chemical_element
7. Clean energy
01 natural sciences
Reaction rate
Nuclear physics
Critical phase
Stars
Physique [physics]/Astrophysique [astro-ph]
chemistry
13. Climate action
Nucleosynthesis
0103 physical sciences
lipids (amino acids, peptides, and proteins)
010306 general physics
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Carbon
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Phys.Rev.C, Phys.Rev.C, 2018, 97 (1), pp.012801. ⟨10.1103/PhysRevC.97.012801⟩
- Accession number :
- edsair.doi.dedup.....cd619ec7f524fa22b7b0e32de04db97b