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

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

2007-08-17

arxiv.org/abs/0708.2317v1

Phys.Lett.B652:255-258,2007

Physics

Nuclear Physics

Nuclear Theory

In press in Physics Letters B

Scientific paper

10.1016/j.physletb.2007.06.077

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.

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