The influence of vacuum polarization on the Sherman function during   elastic electron-nucleus scattering
  The change of the transverse spin asymmetry in the scattering of highly-relativistic spin-polarized electrons from nuclei by vacuum polarization effects is calculated within the Uehling approximation. Results are provided for 1 - 100 MeV electrons scattering from 31P, 64Zn, 152Sm, 197Au and 207,208Pb at backward angles. 
D.H. Jakubassa-Amundsen
physics.atom-ph nucl-th