Phys.Rev. C 104, 024325 (2021)

R.J.Charity, T.B.Webb, J.M.Elson, D.E.M.Hoff, C.D.Pruitt, L.G.Sobotka, P.Navratil, G.Hupin, K.Kravvaris, S.Quaglioni, K.W.Brown, G.Cerizza, J.Estee, W.G.Lynch, J.Manfredi, P.Morfouace, C.Santamaria, S.Sweany, M.B.Tsang, T.Tsang, K.Zhu, S.A.Kuvin, D.McNeel, J.Smith, A.H.Wuosmaa, Z.Chajecki

Using spin alignment of inelastically excited nuclei in fast beams to assign spins: The spectroscopy of ¹³O as a test case

NUCLEAR REACTIONS ⁹Be(¹³O, ¹³O'), E=69.5 MeV/nucleon, [secondary ¹³O beam from ⁹Be(¹⁶O, X), E=150 MeV/nucleon primary reaction, followed by separation of fragments using A1900 fragment separator at NSCL-MSU facility]; measured charged particles, angular distribution of protons in 1p- and 2p-decays of the excited states of ¹³O using High Resolution Array (HiRA) of 14 ΔE-E (Si-CsI(Tl)) telescopes; deduced invariant-mass distributions of the p+¹²N and 2p+¹¹C events from the decay of ¹³O excited states. ¹³O; deduced levels, resonances, J, π, Γ, E(p), possibly rotational bands built on deformed cluster configurations predicted by antisymmetrized molecular dynamics (AMD) calculations. Comparison of p(θ) data with DWBA using FRESCO code, and level structure of ¹³O with ab initio no-core shell model with continuum (NCSMC), and with the structure of ¹³B mirror nucleus.

doi: 10.1103/PhysRevC.104.024325