Atomic Form Factor for Neutral Carbon

The atomic form factor for neutral carbon has been calculated with a Hartree–Fock wavefunction and with three configuration-interaction wavefunctions of varying accuracy. Values obtained with the variational wavefunctions differ from Hartree–Slater values by several percent for all values of the momentum transfer. For all but quite small values of the momentum transfer the difference between variational and Hartree–Fock values lies between 0.10% and 0.15%.