Threshold displacement energy

Threshold displacement energy (often denoted as \(E_d\)) is the minimum energy required to dislodge an atom from its lattice position in a solid, usually within a crystalline structure. This phenomenon is significant in the context of radiation damage, materials science, and nuclear engineering, particularly in understanding how materials respond to various forms of energetic radiation, such as neutrons or ions. When energetic particles collide with a material, they can transfer energy to the atoms in the lattice.