Episode 529: Preparation for X-ray and neutron diffraction topic

Diffraction of a plane wave by a grating

Main aims
Students will:

  • relate diffraction effects to the spacing of gratings etc and to the wavelength of the radiation involved
  • state some uses of X-ray and neutron diffraction
  • apply Bragg’s law

Prior knowledge
Students should be familiar with diffraction due to a standard (transmission) grating (d sin q = nl), de Broglie’s formula l = h/p. It will also help if they are aware that, at (absolute) temperature T, typical energy ~ kT.

Where this leads
This topic could lead into a study of the structures and properties of solid materials.

Download this episode
Episode 529: Preparation for X- ray and neutron diffraction topic (Word, 34 KB)