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Characterizing the astrophysical S-factor for 12C+12C with wave-packet dynamics

Diaz Torres, Alexis and Wiescher, M (2018) Characterizing the astrophysical S-factor for 12C+12C with wave-packet dynamics Physical Review C, 97 (5), 055802.

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Abstract

A quantitative study of the astrophysically important sub-barrier fusion of 12C+12C is presented. Low-energy collisions are described in the body-fixed reference frame using wave-packet dynamics within a nuclear molecular picture. A collective Hamiltonian drives the time propagation of the wave-packet through the collective potential-energy landscape. The fusion imaginary potential for specific dinuclear configurations is crucial for understanding the appearance of resonances in the fusion cross section. The theoretical sub-barrier fusion cross sections explain some observed resonant structures in the astrophysical S-factor. These cross sections monotonically decline towards stellar energies. The structures in the data that are not explained are possibly due to cluster effects in the nuclear molecule, which are to be included in the present approach.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
NameEmailORCID
Diaz Torres, Alexisa.diaztorres@surrey.ac.uk
Wiescher, M
Date : 14 May 2018
DOI : 10.1103/PhysRevC.97.055802
Copyright Disclaimer : Copyright 2018 American Physical Society
Uncontrolled Keywords : Hydrostatic stellar nucleosynthesis; Nuclear astrophysics; Nuclear fusion; Nuclear reactions; Nuclear Physics
Depositing User : Melanie Hughes
Date Deposited : 04 May 2018 08:28
Last Modified : 12 Aug 2018 23:37
URI: http://epubs.surrey.ac.uk/id/eprint/846355

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