Diffracton methods 0600-S2-CKR-MD

Basic terminology: crystal lattice, unit cell, symbolism of points, straight lines and lattice planes, crystal systems, zone equation. Symmetry elements, the matrix operators. Point groups, international, and Schoenflis symbolism. Bravais translational lattices, translational symmetries. Space groups, X-ray crystallography, Bragg and Laue equations. The DSH method – identification and reflection indexing, lattice parameters. Elements of the monocrystalline methods. Relation between the matter distribution and intensities of the diffracted beams. Symmetry of the diffraction pattern and the lattice symmetry. The Friedel law and Laue diffraction groups. The space groups and systematic absences (Bravais lattices, translational symmetry)Relation between the electron density distribution and the diffracted beam intensity, molecular and crystal symmetry. Crystallographic databases. Simulation of the powder diffraction pattern from the CSD entry.