Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1972
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1972phrvc...5..350m&link_type=abstract
Physical Review C, vol. 5, Issue 2, pp. 350-368
Astronomy and Astrophysics
Astrophysics
83
Scientific paper
The total 12C + 12C low-energy reaction cross section has been reanalyzed. Three phenomena suggest an α-particle model for the reaction: (1) the giant resonances, (2) the intermediate-structure resonances, and (3) anomalous branching ratios. The energy dependence of the total cross section over the energy range 2.4 to 9.0 MeV cannot be explained solely by the energy dependence of the penetration of the Coulomb barrier. There is some nuclear structure. The structure can be explained by an optical potential based on the α model leading to absorption under the barrier. It could also be explained with two giant resonances in a Woods-Saxon potential. The intermediate structure is explained as due to special states of 24Mg built of a 12C core and three α particles, and so are the anomalous branching ratios. Astrophysical reaction rates were calculated for a number of possible optical potentials. The giant resonances affect the extrapolation to the energies of astrophysical interest and lead to an uncertainty of a factor of 3 to 10 in the astrophysical reaction rate at T9~=0.6, where T9≡10-9T°K.
Michaud Georges J.
Vogt Erich W.
No associations
LandOfFree
Phenomenological Analysis of the 12C + 12C Reaction 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 Phenomenological Analysis of the 12C + 12C Reaction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phenomenological Analysis of the 12C + 12C Reaction will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-769903