Phys.Rev. C 82, 034311 (2010)

A.Kankainen, V.-V.Elomaa, T.Eronen, D.Gorelov, J.Hakala, A.Jokinen, T.Kessler, V.S.Kolhinen, I.D.Moore, S.Rahaman, M.Reponen, J.Rissanen, A.Saastamoinen, C.Weber, J.Aysto

Mass measurements in the vicinity of the doubly magic waiting point ⁵⁶Ni

ATOMIC MASSES ^56,57Fe, ^53,53m,56Co, ^55,56,57Ni, ^57,58Cu, ^59,60Zn; measured cyclotron resonance frequencies and ratios by JYFLTRAP Penning trap spectrometer; deduced mass excesses. ^56,57Fe, ^53,53m,55,56Co, ^55,56,57,58Ni, ^57,58,59Cu, ^53,56,57Fe, ^59,60Zn; measured frequency ratio pairs. Comparison with previous mass measurements. ^53,54Co, ^55,56Ni, ^57,58Cu, ^59,60Zn; deduced Coulomb displacement energies for the T=1/2 doublets and T=1 triplets. ⁵³Co, ^54,55,56Ni, ^56,57,58Cu, ^58,59,60Zn, ^60,61Ga; deduced S(p) values. Comparison of all the deduced values with AME-2003.

RADIOACTIVITY ⁵³Co(EC), ^53mCo(EC), (p); deduced Q values and revised level schemes. ⁵³Co; deduced energy of the high-spin isomer. ⁵³Co, ^55,56Ni, ^57,58Cu, ^59,60Zn(EC); deduced Q values from measured masses, electron capture probabilities, Logft values, and Gamow-Teller matrix elements.

NUCLEAR REACTIONS ⁵⁴Fe(p, X)⁵³Co/^53mCo/⁵⁶Ni/⁵⁷Cu/⁵⁸Cu, E=40, 50 MeV; ⁵⁴Fe(³He, X)⁵⁵Ni/⁵⁶Ni/⁵⁹Zn/⁶⁰Zn, E=25 MeV; Ca(²⁰Ne, X)⁵⁶Co/⁵⁷Ni, E=75, 105 MeV; measured masses of product nuclides. ⁵⁶Ni(p, γ)⁵⁷Cu; deduced reaction Q value, proton resonance energies, rescaled proton widths, and reaction rates of astrophysical significance.

doi: 10.1103/PhysRevC.82.034311