Phys.Rev. C 97, 054318 (2018)

R.J.Charity, K.W.Brown, J.Okolowicz, M.Ploszajczak, J.M.Elson, W.Reviol, L.G.Sobotka, W.W.Buhro, Z.Chajecki, W.G.Lynch, J.Manfredi, R.Shane, R.H.Showalter, M.B.Tsang, D.Weisshaar, J.R.Winkelbauer, S.Bedoor, A.H.Wuosmaa

Spin alignment following inelastic scattering of ¹⁷Ne, lifetime of ¹⁶F, and its constraint on the continuum coupling strength

NUCLEAR REACTIONS ⁹Be(¹⁷Ne, ¹⁷Ne'), E=62.9 MeV/nucleon [¹⁷Ne secondary beam from 150 MeV/nucleon ¹⁶O primary beam]; measured reaction products, Ep and Ip(θ) of first and second protons in sequential two-proton decay of the second excited state of Jπ=5/2- in ¹⁷Ne using the High Resolution Array (HiRA) at NSCL-MSU. ¹⁷Ne; deduced excitation-energy spectra reconstructed from 2p+¹⁵O events from excited state of ¹⁷Ne, magnetic substate probability distribution, distribution of the relative emission angle between the sequential protons, and spin alignment of ¹⁷Ne excited state. ¹⁶F; deduced invariant mass spectra, widths of the first 0-, 1-, 2-, and 3- resonances, and compared with calculations using shell model embedded in the continuum (SMEC).

RADIOACTIVITY ¹⁶F(p)[from proton decay of excited state in ¹⁷Ne]; deduced width of the ground state from magnitude of the final-state interactions between the protons emitted by the excited state of ¹⁷Ne. Comparison with previous direct measurement of the width of the ground state.

doi: 10.1103/PhysRevC.97.054318