α+O15cluster structure inNe19and resonant

Abstract

The rotational bands of α + 15 O(1/2 − ) in 19 Ne are calculated by employing a simple potential model. The α − 15 O interaction potential is constructed from the calculation of the 20 Ne = α + 16 O structure and the α + 15 N elastic scattering. The resonant levels and their decay width are identified by imposing the absorbing boundary condition. The present calculations predict the sequence of the discrete and overlapping resonances in the negative-and positive-parity states of 19 Ne, respectively. The excitation function of the α + 15 O elastic scattering is also calculated, and the appropriate condition to observe the resonances is discussed.

Evidence for O15+α resonance structures in Ne19 via direct measurement

“…In terms of the underlying structure, recently Otani et al [42] have performed calculations of 15 O+α rotational bands in a simple potential model calculation using the well known 16 O+α cluster band configurations and 15 N+α elastic scattering data. The analog states of the 16 O+α 0 + , 2 + , 4 + and 6 + rotational sequence in 20 Ne leads to doublets (one favored and one unfavored signature) for all but the 0 + state, resulting in 19 Ne levels with spins of 1 /2 − → 17 /2 − .…”

“…There is an uncertainty of ≈50 keV on the calculated energies for 9 /2 − and above, from extracting the values fromFig. 3of Ref [42]…”

α Cluster Structure in Unbound States of 19Ne

“…Moreover, the excitation function of the 15 O resonant scattering by an α target are also investigated. This resonant scattering will be available in future experiment, and we predict the excitation function under the possible conditions reported in the recent experiment [4,7].…”

“…In the present study, we investigate the α + 15 O structure in the 19 Ne systems by employing a simple potential model [4]. A potential parameter set is determined from the calculation of the elastic scattering of the respective mirror system, α + 15 N. From the nuclear potential of α + 15 N, the energy levels of α + 15 O are calculated by adding Coulomb force.…”

Multidimensional fission model with a complex absorbing potential

“…For the decay problems, the absorbing potential simulates the outgoing wave boundary condition, which is imposed when one constructs a Gamow state. Notice that this method is intimately related to the so called complex absorbing potential method (the CAP method), which has been developed to compute resonances states in atomic physics [33][34][35] as well as in nuclear physics [36][37][38], even though we do not take the limit of vanishing complex absorbing potential.…”