Coupling to two target-state bands in the study of then+Ne22system at low energy

Structure of $^{23}$Al from a multi-channel algebraic scattering model based on mirror symmetry

“…Based on the results of Ref. [18] and Section 5 of this work, it may be interesting for them to repeat their investigation including also the 2 + 2 core state. Ref.…”

“…2. The nuclear interaction from the n+ 22 Ne system In a recent paper [18], a good match was obtained between experiment and MCAS calculation for the excitation energies of the nine lowest eigenstates of 23 Ne, treated as the n+ 22 Ne system. These are all deeply bound with regard to the neutron emission threshold.…”

“…The nuclear interaction was determined using mirror symmetry and the related coupled-channel problem of the neutron+ 22 Ne cluster [18]. The five states of the core nucleus were deemed to be members of two rotation bands; the three lowest (0 + 1 g.s., 2 + 1 , 4 + 1 ) belonging to a ground state rotation band.…”

“…The positive-parity central well depth, V 0 , differs from the value of -51.3 MeV used in Ref. [18], to bring the 23 Ne ground state energy, relative to the neutron emission threshold, in line with experiment to three decimal points. (In Ref.…”

“…(In Ref. [18], the parameters were selected without consideration of the 4 + 2 state. The adjustment here is to address that.)…”