Phys.Rev. C 95, 055806 (2017)

W.-J.Ong, C.Langer, F.Montes, A.Aprahamian, D.W.Bardayan, D.Bazin, B.A.Brown, J.Browne, H.Crawford, R.Cyburt, E.B.Deleeuw, C.Domingo-Pardo, A.Gade, S.George, P.Hosmer, L.Keek, A.Kontos, I.-Y.Lee, A.Lemasson, E.Lunderberg, Y.Maeda, M.Matos, Z.Meisel, S.Noji, F.M.Nunes, A.Nystrom, G.Perdikakis, J.Pereira, S.J.Quinn, F.Recchia, H.Schatz, M.Scott, K.Siegl, A.Simon, M.Smith, A.Spyrou, J.Stevens, S.R.Stroberg, D.Weisshaar, J.Wheeler, K.Wimmer, R.G.T.Zegers

Low-lying level structure of ⁵⁶Cu and its implications for the rp process

NUCLEAR REACTIONS ²H(⁵⁶Ni, ⁵⁶Cu), E AP 75 MeV/nucleon, [secondary ⁵⁶Ni beam from ⁹Be(⁵⁸Ni, X), E=160 MeV/nucleon primary reaction using A1900 separator at NSCL-MSU facility]; measured ΔE-TOF particle identification for ions, Eγ, Iγ, γγ-, (⁵⁶Cu ions)γ-coin using GRETINA array and S800 magnetic spectrograph. ⁵⁶Cu; deduced levels, J, π. Comparison with mirror nucleus ⁵⁶Co level scheme, and with shell-model calculations ⁵⁵Ni(p, γ)⁵⁶Cu, T₉=0.1-10; deduced Q value, astrophysical reaction rates as function of temperature, and impact on the r-process around ⁵⁶Ni.

NUCLEAR STRUCTURE ⁵⁶Cu; calculated levels, resonance energies, J, π, spectroscopic factors, Γ_p, Γ_γ using shell model with the GXPF1A interaction. Comparison with experimental data.

doi: 10.1103/PhysRevC.95.055806