Calculations of Nuclear Reactions of Astrophysical Interest Involving Unstable
Nuclei
H. Oberhummer, W. Balogh, R. Bieber, H. Herndl, U. Langer, T. Rauscher,
H. Beer;
Proc. Int. Conf. on Exotic Nuclei and Atomic Masses "ENAM 95",
eds. M. de Saint Simon and O. Sorlin (Editions Frontières,
Gif-sur-Yvette 1995), p. 649.
Abstract:
Nuclear reactions involving unstable nuclei play an important role in
nucleosynthesis. Such reactions are mainly associated with explosive
astrophysical scenarios occurring at the final stages of stellar evolution.
For many nuclear reactions involving unstable nuclei the direct reaction
mechanism cannot be neglected and may even be the dominant reaction mechanism.
For example, the direct-reaction mechanism can be important for neutron capture
by neutron-rich nuclei. We investigate the role of the direct-reaction
mechanism for the two reactions $^{36}$S(n,$\gamma$)$^{37}$S and
$^{124}$Sn(n,$\gamma$)$^{125}$Sn on the neutron-rich border of the region of
stability.
Nuclear-structure models are indispensable for extrapolating reaction rates
to nuclei near and far off the region of stability. The above two reactions
are considered as benchmarks for different nuclear--structure models
(Shell Model, Relativistic Mean Field Theory, Quasi Particle Random Phase
Approximation, Hartree Fock Bogoliubov Theory).

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