From Online Dictionary of Crystallography
(Redirected from Superposition methods)
Superpositionsmethode (Ge). Método de superposición (Sp).
A subset of Patterson methods of structure solution that involve analysing the Patterson map, transforming the origin of the map in turn on to the known positions of certain atoms, and suitably combining the superposed maps. The degree of coincidence between the peaks of the superposing maps is assessed by optimizing one of a number of image-seeking functions, of which the symmetry minimum function is perhaps most often used.