Structure of 65,67Co studied through the beta decay of 65,67Fe and a deep-inelastic reaction

Abstract

The neutron-rich isotopes 65,67Fe and 65Co have been produced at the LISOL facility, Louvain-La-Neuve, in the proton-induced fission of 238U. Beams of these isotopes have been extracted with high selectivity by means of resonant laser ionization combined with mass separation. Yrast and near-yrast levels of 65Co have also been populated in the 64Ni+238U reaction at Argonne National Laboratory. The level structure of 65Co could be investigated by combining all the information from both the 65Fe and 65Co beta decay and the deep-inelastic reaction. The 65Fe, 65Co and 67Fe decay schemes and the 65Co yrast structure are fully established. The 65,67Co level structures can be interpreted as resulting from the coexistence of core-coupled states with levels based on a low-energy proton-intruder configuration.

17 pages, 13 figures, preprint

References in corpus (4)

• Evolution of the N=50 shell gap energy towards ${}^{78}$Ni
• Shape Isomerism at N = 40: Discovery of a Proton Intruder in 67Co
• Shell-model description of monopole shift in neutron-rich Cu
• Coulomb excitation of ${}^{68}$Ni at safe energies

Cited by in corpus (7)

• Beta-decay of Mn-65 to Fe-65
• Lifetime measurements in ${}^{63}$Co and ${}^{65}$Co
• ${\beta }^{-}$ decay study of the ${}^{66}$Mn - ${}^{66}$Fe - ${}^{66}$Co - ${}^{66}$Ni chain
• Shell-model results in $fp$ and $fp{g}_{9/2}$ spaces for ${}^{61,63,65}$Co isotopes
• Re examination of the effect of Pairing Gaps on Gamow Teller Strength Distributions and beta decay Rates
• Detailed low-spin spectroscopy of 65Ni via neutron capture reaction
• The 76Cu conundrum remains unsolved