Electroexcitation of ${\mathrm{C}}^{12}$ in and above the giant resonance has been measured at several angles and incident electron energies in order to obtain transverse and longitudinal reduced matrix elements. Results are presented for a $q$ range of from 0.35 to 0.84 ${\mathrm{fm}}^{-1\mathrm{}}$ and for excitation of 22-37 MeV. Comparison is made with the recent calculation by deForest of quasielastic scattering, as well as with earlier particle-hole and liquid-drop-model calculations.

• Received 1 December 1969

DOI:https://doi.org/10.1103/PhysRevLett.24.274