Transverse electric form factors for electron scattering and violation of current conservation in nuclear models

摘要

Comparison is made between calculations of transverse electric form factors using the standard expression for the electric multipole operator with those obtained by invoking current conservation first in the long wavelength limit and second for arbitrary momentum transfer. Results are presented for select E2 transitions in (sup 12)C, (sup 20)Ne, (sup 24)Mg, and (sup 28)Si. It is found that the form factors differ significantly when the conventional shell model wave functions are used, confirming that these do violate current conservation. However, the variation between results is much smaller when multi-shell models of nuclear structure are used. All three forms of the operator yield comparable good agreement with existing data indicating that wave functions obtained from these models are largely current conserving. 19 refs., 5 tabs., 7 figs. (Atomindex citation 26:070506)