sup 26 Mg nuclear structure from sup 26 Mg(200 MeV)+ sup 208 Pb scattering

Differential cross sections are reported for elastic scattering and for exciting the 2{sub 1}{sup +} (1.81 MeV), 2{sub 2}{sup +} (2.94 MeV), 4{sub 1}{sup +} (4.32 MeV), and the 4{sub 2}{sup +} (4.90 MeV) states of {sup 26}Mg from {sup 26}Mg (200 MeV)+{sup 208}Pb scattering. In addition, we have measured complete particle-{gamma} angular correlations for the 2{sub 1}{sup +}{r arrow}0{sub 1}{sup +}, 2{sub 2}{sup +}{r arrow}2{sub 1}{sup +}, and 4{sub 2}{sup +}{r arrow}2{sub 1}{sup +} {gamma} decays. Coupled-channels analysis was performed to extract {ital E}2 and {ital E}4 matrix elements. For the ground-state rotational band we find {ital M}({ital E}2;0{sub 1}{sup +}{leftrightarrow}2{sub 1}{sup +})={minus}16.79{plus minus}0.13 {ital e} fm{sup 2}, {ital M}({ital E}4;0{sub 1}{sup +}{leftrightarrow}4{sub 2}{sup +})=+95{plus minus}10 {ital e} fm{sup 4}, and {ital Q}{sub 2}(2{sub 1}{sup +})={minus}20.9{plus minus}1.9 fm{sup 2}, where we have identified the 4{sub 2}{sup +} (4.90 MeV) state as a member of the ground-state band rather than the 4{sub 1}{sup +} (4.32 MeV) state. The 2{sub 2}{sup +} (2.94 MeV) state is not well accounted for by the asymmetric-rotor model.