FRAGMENTATION OF HIGH-SPIN PARTICLE-HOLE STATES IN MG-26

The inelastic scattering of 134 MeV protons to seven 6{sup -} states in {sup 26}Mg has been studied. By combining the results with those of a companion electron scattering study, and utilizing DWIA calculations, it has been possible to extract isoscalar and isovector excitation amplitudes. Shell model calculations using (1d{sub 5/2}){sup 10-n-p} (2s{sub 1/2}){sup n} (1f{sub 7/2}){sup p}, with p = 0 and 1, model spaces can reproduce the general features of the fragmentation, but not the structure of the yrast 6{sup -} state. 28 refs., 10 figs., 2 tabs.