https://doi.org/10.1051/epjconf/202328403018
A novel R-matrix formalism for three-body channels
Atominstitut, TU Wien, Stadionallee 2, 1020 Vienna, Austria
* e-mail: benedikt.raab@tuwien.ac.at
** e-mail: thomas.srdinko@tuwien.ac.at
**** e-mail: helmut.leeb@tuwien.ac.at
Published online: 26 May 2023
At low incident neutron energies nuclear reaction cross sections exhibit a distinct resonance structure which cannot properly be described by (semi-)microscopic models. Usually R-matrix theory is applied which provides a suffi ciently accurate but phenomenological description of the resonance region. However, standard R-matrix theory is only suited for two-particle channels. Three- and many-particle channels which may occur in light nuclear systems even at rather low incident energies are usually treated in an approximative or effective way. In this contribution a novel R-matrix formalism for three-body channels and its application to nuclear systems will be presented. It is a generalized and significantly modified form of a proposal by W. Glöckle based on the Faddeev equations.
© The Authors, published by EDP Sciences, 2023
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