Large basis space projected Hartree-Fock wave functions have been used to calculate the longitudinal and transverse (electric) form factors from the excitations of $2_1^{+}$ and $4_1^{+}$ states in ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$, ${}_{}{}^{20}{}_{}{}^{}\mathrm{Ne}$, and ${}_{}{}^{24}{}_{}{}^{}\mathrm{Mg}$. The results obtained by use of such large basis space models of structure are compared with limited basis space (shell-model) predictions to show that momentum-transfer-dependent corrections can be quite diverse.

• Received 15 May 1989

DOI:https://doi.org/10.1103/PhysRevC.41.335