Bragg Diffraction

This experiment demonstrates neutron diffraction using a crystal monochromater. The experiment utilizes a 4" beam port at the MIT Nuclear ReactorLaboratory; this beam of low-energy neutrons is controlled using a mechanical chopper. Students measure the Bragg-diffracted beam that is created by altering the neutron beam path with a copper crystal. The animation shows the angle of incidence and the resulting diffraction of low, medium and fast neutrons.

For more information, see MIT Reactor