Energies of the single-particle proton 1 and 2 states in the Ni isotopes

Bespalova, O. V.*; Boboshin, I. N.*; Varlamov, V. V.*; Ermakova, T. A.*; Ishkhanov, B. S.*; Komarov, S. Yu.*; Koura, Hiroyuki   ; Romanovskii, E. A.*; Spasskaya, T. I.*

Single-particle energies corresponding to the maximum value of the spectroscopic factor were obtained for the proton states near the Fermi energy in the Ni nuclei by the joint evaluation of the data on the stripping and pickup reactions on the same nucleus. These results are compared with the center-of-mass energies of the single-particle state fragment distributions obtained by the same method and with the single-particle energies calculated with the Woods-Saxon-like potential and with the dispersive optical model potential. For 2 states (the first unoccupied states), Results of the Woods-Saxon-like potential are in excellent agreement with the energies of maximum (practically the same), for 1, 1 and for 2 states the agreement within 1 - 1.5 MeV was achieved. Sufficient difference between centers of mass and maximums was obtained for 1 and 2 states, which may be connected with the fragmentation effect.