Principle

When polycrystalline samples are irradiated with X-rays a
characteristic diffraction pattern results. These Debye-Scherrer
reflections are photographed and then evaluated.

Tasks


Debye-Scherrer photographs are to be taken of powdered samples
of sodium chloride and caesium chloride.

The Debye-Scherrer rings are to be evaluated and assigned to
the corresponding lattice planes.

The lattice constants of the sample materials are to be
determined.

The number of atoms in the unit cells of each sample are to be
determined.


What you can learn about


Crystal lattices

Crystal systems

Reciprocal lattice

Miller indices

Structure amplitude

Atomic form factor

Bragg scattering