Indirect Study of 13C(α,n)16O
Creators
- 1. IPN-Orsay, IN2P3-CNRS, Universite Paris XI, Orsay, 91406 (France)
- 2. CSNSM, IN2P3-CNRS, Universite Paris XI, Orsay, 91405 (France)
- 3. Physique Nucleaire Theorique et Physique Mathematique, ULB CP229, B-1050 Brussels (Belgium)
- 4. GANIL, IN2P3-CNRS, Caen (France)
- 5. GSI, Postfach 110552, D-64220, Darmstadt (Germany)
Description
The reaction 13C(α,n)16O is considered as the main neutron source for s-process in low-mass asymptotic giant branch stars. At low energies of astrophysical interest, the contribution of the subthreshold state 6.356 MeV of 17O to the 13C(α,n)16O cross section should be taken into account. However, the results of previous studies of this contribution lead to different conclusions.Hence, we investigated the effect of this resonance on the astrophysical S-factor through a new precise measurement of the alpha spectroscopic factor, Sα, of the 6.356 MeV state using the transfer reaction 13C(7Li,t)17O at two different incident energies. The measured angular distributions and the obtained spectroscopic factors will be presented as well as their impact on C(α,n)16O cross section and reaction rate
Additional details
Identifiers
- DOI
- 10.1063/1.2916995;
Publishing Information
- Journal Title
- AIP Conference Proceedings
- Journal Volume
- 1001
- Journal Issue
- 1
- Journal Page Range
- p. 98-104
- ISSN
- 0094-243X
- CODEN
- APCPCS
Conference
- Title
- 9. Torino workshop on evolution and nucleosynthesis in AGB stars; 2. Perugia workshop on nuclear astrophysics
- Dates
- 21-27 Oct 2007
- Place
- Perugia (Italy)
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 40017658
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- ALPHA REACTIONS; ANGULAR DISTRIBUTION; ASTROPHYSICS; ASYMPTOTIC SOLUTIONS; CARBON 13 TARGET; CROSS SECTIONS; GIANT STARS; LITHIUM 7 REACTIONS; MEV RANGE; NEUTRON SOURCES; NUCLEOSYNTHESIS; OXYGEN 16; OXYGEN 17; S PROCESS; SPECTROSCOPIC FACTORS; TRANSFER REACTIONS
- Descriptors DEC
- CHARGED-PARTICLE REACTIONS; DIMENSIONLESS NUMBERS; DIRECT REACTIONS; DISTRIBUTION; ENERGY RANGE; EVEN-EVEN NUCLEI; EVEN-ODD NUCLEI; EVOLUTION; HEAVY ION REACTIONS; ISOTOPES; LIGHT NUCLEI; MATHEMATICAL SOLUTIONS; NUCLEAR REACTIONS; NUCLEI; OXYGEN ISOTOPES; PARTICLE SOURCES; PHYSICS; RADIATION SOURCES; STABLE ISOTOPES; STAR EVOLUTION; STARS; SYNTHESIS; TARGETS
Optional Information
- Notes
- (c) 2008 American Institute of Physics