Abstract
Consistent description of and has been a long-standing problem of microscopic cluster models, where the wave function is fully antisymmetrized and the effective interaction is applied not between clusters but between nucleons. When the effective interaction is designed to reproduce the binding energy of (four ), the binding energy of (three ) becomes underbound by about 10 MeV. In the present study, by taking into account the coupling with the -coupling shell model components and utilizing the Tohsaki interaction, which is phenomenological but has finite-range three-body interaction terms, it is shown that consistent understanding of these nuclei can be achieved. The original Tohsaki interaction gives a small overbound value of about 3 MeV for , and this is improved by slightly modifying the three-body Majorana exchange parameter. Also, the coupling with the -coupling shell model wave function strongly contributes to the increase of the binding energy of . So far the application of the Tohsaki interaction has been limited to nuclei; here, Bartlet and Heisenberg exchange terms are added in the two-body interaction part for the purpose of applying it to neutron-rich systems, and it is applied to .
- Received 2 September 2016
- Revised 11 November 2016
DOI:https://doi.org/10.1103/PhysRevC.94.064324
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