Scattering on polycrystals

Metadata
shorthands: {}
aliases: [Scattering on dust, Scattering on polycrystallines]
created: 2021-10-31 22:06:56
modified: 2022-01-10 04:13:04

For the necessary definitions and theory, see Elastic scattering on crystals.

The distance between lattice planes:

Where are the Miller indices of the lattice plane set and the reciprocal lattice vector is parallel to the normal vector of the planes.

In scattering experiments, according to the Bragg condition, we get constructive interference if

Is fulfilled for deflected waves.

This is only true for scattering on crystal dust because in this case we have rotational symmetry around the incoming ray, so the scattering pattern will consist of concentric circles. These circles are exactly described by the angle.