Coupled-channel study for O-isotopes with the core plus valence neutrons model Original Research Article

We study 17O and 18O nuclei by using the core+n(+n) model. We perform the coupled-channel and the resonating group method (RGM) calculations not only for bound states but also for resonant states of 17O. We obtain the state independent core-n interaction, which includes the exchange kernel, and reasonable single-particle energy (SPE) in the 16O core. By using the same interaction mechanism of 17O, we study 18O in the core+n+n system.