Recent results on the 12C+12C reactions

Details Recent results on the 12C+12C reactions Recent results on the 12C+12C reactions

May 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc.1012..144s&link_type=abstract

FRONTIERS IN NUCLEAR STRUCTURE, ASTROPHYSICS, AND REACTIONS: FINUSTAR 2. AIP Conference Proceedings, Volume 1012, pp. 144-149 (

Astronomy and Astrophysics

Astrophysics

1

Resonance Reactions, X- And Gamma-Ray Spectroscopy, 20<=A<=38

Scientific paper

The set of fusion reactions 12C+12C play a critical role in several astrophysical processes. In a recent experiment, the fusion reactions 12C+12C have been studied at ECM = 2.10 to 4.75 MeV by γ-ray spectroscopy using a C target of ultra-low hydrogen contamination. The deduced astrophysical S~(E) factor exhibits previously unknown resonances at E<=3.0 MeV, in particular a strong and narrow resonance at E = 2.14 MeV, the high-energy tail of the Gamow peak. Current extrapolations of the reaction rate, which assume that the astrophysical S~(E) factor varies smoothly with energy within the Gamow window, are thus subject to significant uncertainty.

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