They developed a theoretical model of electron densities and the atomic scattering factor in solids.
2.
However, atomic scattering factors have imaginary parts due to the anomalous dispersion effect, and Friedel's law is broken by this effect.
3.
The atomic scattering factors in ACEM are accurately characterized by a 12-parameter fit of Gaussians and Lorentzians to relativistic Hartree Fock calculations . http : / / people . ccmr . cornell . edu / ~ kirkland/
4.
From 1966 he begins a long line of research on the Atomic Scattering Factor of metals for the knowledge of the electronic configurations of metal elements from Titanium to Copper ( 3d elements ) in collaboration with the Research Centre MASS ( U . S . Army Materials and Mechanics Research Centre in Watertown ).
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