An implementation of atomic form factors Original Research Article

A FORTRAN implementation of hydrogen-like discrete–discrete atomic form factors is presented. The definition of atomic form factors and their applicability to the calculation of atomic cross sections is briefly discussed. An explicit analytical expression for the discrete–discrete atomic form factors is presented exactly in the way they are implemented in the program. Finally, a description of the program itself and how to use it is given, together with some useful examples and their outputs.