Phys.Rev. C 101, 041304 (2020), Erratum Phys.Rev. C 103, 029901 (2021)

L.Canete, S.Giraud, A.Kankainen, B.Bastin, F.Nowacki, A.Poves, P.Ascher, T.Eronen, V.Alcindor, A.Jokinen, A.Khanam, I.D.Moore, D.A.Nesterenko, F.De Oliveira Santos, H.Penttila, C.Petrone, I.Pohjalainen, A.de Roubin, V.A.Rubchenya, M.Vilen, J.Aysto

Precision mass measurements of ⁶⁷Fe and ^{69, 70}Co: Nuclear structure toward N = 40 and impact on r-process reaction rates

ATOMIC MASSES ⁶⁷Fe, ^69,69m,70Co; measured mass excesses using time of flight-ion cyclotron resonance technique with the JYFLTRAP double Penning trap mass spectrometer. ^69mCo; deduced level energy of 1/2- intruder state. Comparison with evaluated data in AME2016. Systematics of S(2n) values and two-neutron shell gap parameter for Z=25-28, N=35-45 nuclei.

NUCLEAR STRUCTURE ^67,69,71Co; calculated levels, J, π using shell-model for the spherical and 1/2- intruder bands. Comparison with experimental data.

NUCLEAR REACTIONS ⁶⁸Fe, ⁶⁹Co(γ, n), T=0.5-5 GK; calculated astrophysical reaction rates, and mass-related uncertainties for the astrophysical r process calculations.

doi: 10.1103/PhysRevC.101.041304