Aims

Introduction to the study of crystalline state by diffraction of X-rays.

Main themes

First part (15hrs): X-ray properties. Reminder of basic relations of X-ray crystallography . Study of powder diagrams and application to mineral identification. Experimental methods applicable to monocristals. Determination of lattice parameters. Calculation of diffracted intensities. Determination of space groups. Second part (7,5hrs): Determination of molecular structures. Calculation of electronic density. Phase problems and resolution methods (Patterson, direct methods, isomorphous replacement, anomalous scattering).