Neutron single-particle states above the N=164 subshell in 98251Cf and 96249Cm studied by neutron transfer reactions

Single-particle state assignments in 251Cf and 249Cm at ∼1 MeV excitation have been deduced from cross sections previously measured for the 250Cf(d,p)251Cf and 248Cm(4He,3He)249Cm reactions. The assignments are supported by observed cross-section signatures and intraband level spacings. The observed energies of these single-particle states, after pairing effects are removed, are in good agreement with values calculated using a Woods-Saxon single-particle potential. Neutron level diagrams, showing level spacings as a function of ν2,ν4, and ν6, are extended to include neutron orbitals above N=164.