Computer Science
Scientific paper
Aug 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1269..276d&link_type=abstract
THE 10TH INTERNATIONAL SYMPOSIUM ON ORIGIN OF MATTER AND EVOLUTION OF GALAXIES: OMEG-2010. AIP Conference Proceedings, Volume 1
Computer Science
Nuclear Cluster Model, Normalising, Nuclear Spin, Nucleon-Nucleon Interactions, Resonance Reactions And Scattering, Nuclear, Cluster Models, Spectroscopic Factors And Asymptotic Normalization Coefficients, Spin, Parity, And Isobaric Spin, Nucleon-Nucleon Interactions, Resonances
Scientific paper
The E2 component of the 12C(α, γ)16O cross section is investigated by a microscopic cluster model, and by R-matrix fits. The first approach provides SE2(300 keV)~50 keV-b for ground-state transitions. In the R-matrix theory, we show that the background term plays a crucial role, and cannot be determined without ambiguity. Only an upper limit on the extrapolated S factor can be obtained [SE2(300 keV)<190 keV-b]. To constrain the R-matrix analysis, we use the GCM Asymptotic Normalization Constant (ANC) of the 21+ level. This procedure strongly reduces the uncertainties on the R-matrix fit, and we end up with a recommended value of SE2(300 keV) =42+/-2 keV-b. As ANC values derived from indirect methods are not consistent with the 12C(α, γ)16O cascade transitions to the 21+ state, we suggest a remeasurement of this cross section.
Descouvemont Pierre
Dufour Marianne
No associations
LandOfFree
The 12C(α, γ)16O E2 cross section at stellar energies does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The 12C(α, γ)16O E2 cross section at stellar energies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The 12C(α, γ)16O E2 cross section at stellar energies will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1862588