Effects of nuclear molecular configurations on the astrophysical S-factor for ${}^{16}$O + ${}^{16}$O

Abstract

The impact of nuclear molecular configurations on the astrophysical S-factor for ${}^{16}$O + ${}^{16}$O is investigated within the realistic two-center shell model based on Woods-Saxon potentials. These molecular effects refer to the formation of a neck between the interacting nuclei and the radial dependent collective mass parameter. It is demonstrated that the former is crucial to explain the current experimental data with high accuracy and without any free parameter, whilst in addition the latter predicts a pronounced maximum in the S-factor. In contrast to very recent results by Jiang et al., the S-factor does not decline towards extremely low values as energy decreases.

In press in Physics Letters B

References in corpus (3)

• Fusion reactions in multicomponent dense matter
• Two center shell model with Woods-Saxon potentials: adiabatic and diabatic states in fusion
• Shell corrections for finite depth potentials with bound states only

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• New and efficient method for solving the eigenvalue problem for the two-center shell model with finite-depth potentials
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