Neutron and proton transition matrix elements of {sup 58,60,62,64}Ni from pion inelastic scattering

The combination of {pi}{sup {minus}} and {pi}{sup +} inelastic scattering in the delta resonance region has proven to be a useful method for studying neutron and proton transition matrix elements. The authors have made {pi}{sup {minus}} and {pi}{sup +} (E{sub {pi}} = 180MeV) angular-distribution measurements of elastic scattering and inelastic scattering to the first excited states (J{pi} = 2{sup +}) of {sup 58,60,62,64}Ni from {theta} = 14{degrees} (17{degrees} for {pi}{sup +}) to {theta} = 50{degrees} using the EPICS facility at LAMPF. Transition matrix elements were extracted by fitting distorted-wave impulse-approximation calculations to the {pi}{sup {minus}} and {pi}{sup +} inelastic cross sections simultaneously. Results of the analysis will be presented and compared with the results of work using other probes. Nuclear structure implications will be discussed.