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High-resolution (e,e′) was used to measure the form factor of the 6−, T=1 resonance in 28Si. The results disagree with previous experimental results and with theoretical calculations. The role of meson-exchange currents in producing the observed quenching of magnetic strength, and the relevance of (e,e′) to other reactions are briefly discussed.

The electromagnetic form factors for the stronger transitions to negative parity states in /sup 24/Mg were measured for electron energies 90--280 MeV and scattering angles of 90/sup 0/ and 160/sup 0/. The isoscalar K/sup ..pi../ = 0/sup -/ and 3/sup -/ bands show form factors in agreement with open-shell random-phase approximation calculations, even though the parentages of these two bands are radically different. For the isovector negative parity states, a quenching of magnetic strength is observed; its origins are discussed.

The unique high-resolution and high-energy features of the electron-scattering facility at the MIT-Bates Accelerator were used to locate a dominant narrow resonance at 15.045 +- 0.035 MeV in /sup 24/Mg. A spin-parity assignment of 6/sup -/ and an isospin T=1 assignment were made. The M6 form factor was measured and compared to the prediction of a theoretical calculation which uses the open-shell random-phase approximation on a shell-model ground state for /sup 24/Mg.

The high-resolution electron scattering facility at the MIT-Bates accelarator was used to resolve the 4 + 1 4.12 MeV and 2 + 2 4.24 MeV levels in 24 Mg. The respective E2 and E4 Coulomb form factors were measured and compared to form factors calculated theoretically; the 4 + 1 form factor exhibits a momentum-transfer dependence which strongly suggests that K is a good quantum number in 24 Mg.