Regular Article – Theoretical Physics
He(He,He)He as a three-body reaction via a continuum resonance in the n+He system
A tribute to Mahir S. Hussein
Technische Universität Darmstadt, Fachbereich Physik, Institut für Kernphysik, Schlossgartenstraße 9, 64289, Darmstadt, Germany
2 GSI Helmholtzzentrum für Schwerionenforschung GmbH, Theorie, Planckstraße 1, 64291, Darmstadt, Germany
Accepted: 22 October 2020
Published online: 6 November 2020
The He(He,He)He reaction involving the unstable He nucleus is a possible process in primordial nucleosynthesis to convert He into He in a neutron transfer reaction. Since experimental data for the reaction cross section are not available, a theoretical prediction is needed to estimate the relevance of this process in comparison to other reactions, e.g., He(H,p)He or H(H,n)He. In this work the cross section and the Maxwellian-averaged transition rate of the He(He,He)He reaction are calculated using a post-form distorted-wave Born approximation in a simple cluster model. For that purpose the reaction is treated as a genuine process with three particles, , in the entrance channel proceeding through the resonance in the He scattering continuum.
© The Author(s) 2020
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