NEUTRON TRANSITION DENSITIES FOR LOW-LYING STATES IN NI-58 OBTAINED BY USING 200 MEV INELASTIC PROTON-SCATTERING

Differential cross section and analyzing power measurements have been made for 200 MeV inelastic proton scattering from Ni-58. Using the cod e LEA, neutron transition densities have been obtained for four 2(+), one 3(-), and five 4(+) low lying states. Charge transition densities obtained from electron scattering were used in order to minimize the n uclear structure uncertainty, along with a recent 200 MeV empirical ef fective interaction. Two types of calculations have been used in compa rison to the data, one in which the neutron transition densities are o btained by scaling the charge transition densities by N/Z, the other i n which the neutron transition densities are allowed to vary to obtain a best fit to the data. Multipole matrix elements are obtained and co mpared to collective model analyses using both intermediate energy pro tons and pion scattering results. The radial shapes of the neutron tra nsition densities for the lowest lying 2+ and 3- states are compared t o those calculated using the energy density method. [S0556-2813(98)068 10-1].