Recent results on the {sup 12}C+{sup 12}C reactions

The set of fusion reactions {sup 12}C+{sup 12}C play a critical role in several astrophysical processes. In a recent experiment, the fusion reactions {sup 12}C+{sup 12}C have been studied at E{sub CM} = 2.10 to 4.75 MeV by {gamma}-ray spectroscopy using a C target of ultra-low hydrogen contamination...

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Bibliographic Details
Published inAIP conference proceedings Vol. 1012; no. 1
Main Authors Spillane, T., Institute fuer Experimentalphysik III, Ruhr-Universitaet Bochum, Raiola, F., Zeng, S., Rolfs, C., Schuermann, D., Strieder, F., Becker, H.-W., Bordeanu, C., Gialanella, L., Romano, M., Schweitzer, J.
Format Journal Article
LanguageEnglish
Published United States 12.05.2008
Subjects
ASTROPHYSICS
CARBON 12
CARBON 12 REACTIONS
CARBON 12 TARGET
CROSS SECTIONS
GAMMA SPECTROSCOPY
HEAVY ION FUSION REACTIONS
MEV RANGE
NUCLEAR PHYSICS AND RADIATION PHYSICS
RESONANCE
THERMONUCLEAR REACTOR MATERIALS
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ISSN0094-243X
1551-7616
DOI10.1063/1.2939283

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Summary:The set of fusion reactions {sup 12}C+{sup 12}C play a critical role in several astrophysical processes. In a recent experiment, the fusion reactions {sup 12}C+{sup 12}C have been studied at E{sub CM} = 2.10 to 4.75 MeV by {gamma}-ray spectroscopy using a C target of ultra-low hydrogen contamination. The deduced astrophysical S-tilde(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-tilde(E) factor varies smoothly with energy within the Gamow window, are thus subject to significant uncertainty.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.2939283