Abstract
This is a brief report on the progress made towards an exact theory for (d,p) on heavy nuclei, which is important to determine neutron capture rates for r-process nuclei. We first discuss the role of core excitation in the framework of Faddeev equations. Following that, we provide the status of the Faddeev theory being developed in the Coulomb basis with separable interactions. We then present some recent developments on nonlocal nucleon optical potentials. Finally, the progress on the theory transfer to the continuum is summarized.
Highlights
Since the early eighties, reaction experiments with radioactive beams have shed light on so many intriguing phenomena, from nuclear halos [1] to a strong dependence of the expected shell occupancy with the asymmetry of the system [2]
We provide an overview of a few recent developments that are taking place in the field of nuclear reactions, with focus on nucleon induced and deuteron induced reactions
We discuss a number of recent developments in the field of reaction theory, with particular emphasis on nucleon and deuteron induced reactions
Summary
Reaction experiments with radioactive beams have shed light on so many intriguing phenomena, from nuclear halos [1] to a strong dependence of the expected shell occupancy with the asymmetry of the system [2]. We applied the method of [7], which includes dynamical core excitation in the reaction mechanism to all orders, to the 10Be(d,p)11Be like reactions, and studied the excitation effects for beam energies from the range Ed = 15 − 90 MeV [3]. We compared the resulting angular distributions and the spectroscopic factor that would be extracted from the cross sections, when including dynamical core excitation in the reaction model (S f add), to that of the original structure model S th. Dynamical effects can be so large that the spectroscopic factor extracted by taking the ratio of data and theory is reduced to half the value of the spectroscopic factor in the original structure model This strong dependence is most important for loosely bound systems. Further investigation is needed to determine universality in the system
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