Tables for form factors and anomalous dispersion are of wide general use in the UV, x-ray and γ-ray communities, and have existed for a considerable period of time.Much of the recent theoretical basis for these was contributed by Cromer, Mann and Liberman while much of the experimental data was synthesised by Henke et al.
https://www.nist.gov/pml/x-ray-form-factor-attenuation-and-scattering-tables

