Correspondence Between $α$ -Transfer and Two-Proton and Two-Neutron Transfer Reactions to the Nickel Isotopes

The (

{}^{6}{Li}, d

) reaction has been measured at 34-MeV incident energy from targets of

{}^{54}{Fe}

{}^{56}{Fe}

, and

{}^{58}{Fe}

using a

Q 3 D

spectrograph. A close correspondence is found between the (

{}^{6}{Li}, d

) spectra and previous (

t, p

) and (

{}^{3}{He}, n

) results for the same final nuclei. The

0^{+}

proton-pairing vibration states in

{}^{58}{Ni}

and

{}^{60}{Ni}

are strongly excited, and the pairing vibration is identified for the first time at 3.519 MeV in

{}^{62}{Ni}

based on (

{}^{6}{Li}, d

). The remainder of the levels in

{}^{60}{Ni}

and

{}^{62}{Ni}

follow closely the (

t, p

) patterns of excitation.

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Correspondence Betweenα-Transfer and Two-Proton and Two-Neutron Transfer Reactions to the Nickel Isotopes