Description of nuclear reaction observables including coupling to the continuum
FUSTIPEN Lecture
Dr Nicolas Michel from the Oak Ridge National Laboratory
«Description of nuclear reaction observables including coupling to the continuum »
July 3, 2012, GANIL, France
Abstract:
The separation of structure and reaction frameworks has become a paradigm for the physical description of many-body quantum systems. This situation is inadequate to describe drip-line nuclei, where both inter-nucleon correlations and reaction degrees of freedom, involving coupling to the continuum, are important. Thus, nuclear models including both structure and reaction aspects have to be utilized. In this lecture, overlap functions and asymptotic normalization coefficients (ANCs), of interest for low-energy astrophysical reactions, will be considered in the Shell Model Embedded in the Continuum and the Gamow Shell Model for nuclei close to drip-line. Proton elastic scattering cross sections will be studied for ⁴⁰Ca, in the context of ab initio coupled-cluster theory with realistic interaction. It will be shown that the coupling between inter-nucleon correlations and continuum is necessary to properly reproduce ANCs and cross sections. Finally, the application of GSM to the description of dipolar molecular anions, which are part of the most weakly bound many-body quantum systems, will also be presented.
Marek Ploszajczak (GANIL)