New Symmetry-Adapted ab initio Approach to Nuclear Reactions for Intermediate-mass Nuclei

0541785 - ÚJF 2022 RIV DE eng C - Conference Paper (international conference)
Mercenne, A. - Launey, K. D. - Escher, J. E. - Dytrych, Tomáš - Draayer, J. P.
New Symmetry-Adapted ab initio Approach to Nuclear Reactions for Intermediate-mass Nuclei.
Springer Proceedings in Physics. Vol. 254. Munchen: Springer, 2021, s. 73-79. ISBN 978-3-030-58082-7. ISSN 0930-8989.
[6th International Workshop on Compound-Nuclear Reactions and Related Topics. Berkeley (US), 24.09.2018-28.09.2018]
Institutional support: RVO:61389005
Keywords : excitation energy * Hamiltonians * reaction intermediates
OECD category: Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

With a view toward describing reactions of intermediate-mass nuclei from first principles, we present first results for the norm and Hamiltonian overlaps (kernels) for the p-α, p-16O, and p-20Ne cluster systems using realistic nucleon–nucleon interactions. This is achieved in the framework of a new ab initio approach that combines the symmetry-adapted no-core shell model (SA-NCSM) with the resonating group method (RGM). In this model, a physically relevant basis based on the SU(3) symmetry is used. The structure of the clusters is provided by the ab initio SA-NCSM, which enables the description of spatially enhanced nuclear configurations and heavier nuclei, by exploiting symmetries known to dominate in nuclei. Here, we discuss the applicability and efficacy of this approach.
Permanent Link: http://hdl.handle.net/11104/0319318