TY  - JOUR
A1  - Lentzen, Markus
T1  - Relativistic correction of atomic scattering factors for high-energy electron diffraction
Y1  - 2019
VL  - 75
IS  - 6
SP  - 861
EP  - 865
JF  - Acta Crystallographica Section A
DO  - 10.1107/S2053273319012191
DO  - 10.23689/fidgeo-5081
N2  - Relativistic electron diffraction depends on linear and quadratic terms in the electric potential, the latter being neglected in the frequently used relativistically corrected Schrödinger equation. The quadratic electric potential term modifies atomic scattering amplitudes in particular for large-angle scattering and backscattering. The respective correction increases with increasing scattering angle, increasing atomic number and increasing kinetic energy. Conventional tabulations for electron scattering and its large-angle extrapolations can be amended in closed form by a universal correction based on the screened Coulomb potential squared.
UR  - http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/9427
ER  -