Longitudinal and transverse form factors from 12C

Electron scattering form factors from 12C have been studied in the framework of the particle-hole shell model. Higher configurations are taken into account by allowing particle-hole excitations from the 1s and 1p shells core orbits up to the 1f-2p shell. The inclusion of the higher configurations modifies the form factors markedly and describes the experimental data very well in all momentum transfer regions