Upper Limit on the molecular resonance strengths in the ${}^{12}$C+${}^{12}$C fusion reaction

Details Upper Limit on the molecular resonance strengths in the ${}^{12}$C+${}^{12}$C fusion reaction Upper Limit on the molecular resonance strengths in the ${}^{12}$C+${}^{12}$C fusion reaction

2011-09-28

arxiv.org/abs/1109.6078v1

Physics

Nuclear Physics

Nuclear Experiment

4 pages, 3 figures, FUSION11 conference proceeding

Scientific paper

Carbon burning is a crucial process for a number of important astrophysical scenarios. The lowest measured energy is around E$_{\rm c.m.}$=2.1 MeV, only partially overlapping with the energy range of astrophysical interest. The currently adopted reaction rates are based on an extrapolation which is highly uncertain because of potential resonances existing in the unmeasured energy range and the complication of the effective nuclear potential. By comparing the cross sections of the three carbon isotope fusion reactions, ${}^{12}$C+${}^{12}$C, ${}^{12}$C+${}^{13}$C and ${}^{13}$C+${}^{13}$C, we have established an upper limit on the molecular resonance strengths in ${}^{12}$C+${}^{12}$C fusion reaction. The preliminary results are presented and the impact on nuclear astrophysics is discussed.

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