Core-excitation three-cluster model description of 8He and 10He

H. Kamada, M. Yamaguchi, E. Uzu

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5 Citations (Scopus)

Abstract

We introduce a new model applying to the core-nucleus and two-neutron system. The Faddeev equations of 6He-n-n and 8He-n-n systems for 8He and 10He are solved, respectively. The potential of the subsystem in the model has been determined to make a coupling both of the ground state and the excited one inside the core nucleus. By a similar mechanism the three-nucleon system is solved with the three-body force originating from an isobar excitation of the nucleon. Inputting only the information of subsystem energy levels and widths we get the coupling constants of rank 1 Yamaguchi potential between the core nucleus and neutron. We calculate the Faddeev three-cluster equations to obtain the low-lying energy levels of 8He and 10He. The 1- state of 10He, which has not been detected yet in experiments, is located in the energy level between the 0+ and 2+ states.

Original languageEnglish
Article number014005
JournalPhysical Review C - Nuclear Physics
Volume88
Issue number1
DOIs
Publication statusPublished - 24 Jul 2013

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