X-ray investigation of hexagonal crystal structures / Debye-Scherrer powder method

Principle

A polycrystalline zirconium foil is irradiated with X-rays. The resulting Debye-Scherrer reflections are photographed and then evaluated.

Tasks

1. Take Debye-Scherrer photographs of the zirconium sample.
2. Evaluate the Debye-Scherrer rings and assign them to the corresponding lattice planes.
3. Determine the lattice constants of the sample material.
4. Determine the number of atoms in a unit cell of the sample.

Learning objectives

• Crystal lattices
• crystal systems
• reciprocal lattice
• Miller indices
• structure amplitude
• atomic form factor
• Bragg scattering