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About: Threshold displacement energy     Goto   Sponge   NotDistinct   Permalink

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Type: yago:Consequence111410625yago:Phenomenon100034213yago:PhysicalEntity100001930yago:Process100029677yago:WikicatRadiationEffects New Facet based on Instances of this Class

In materials science, the threshold displacement energy (Td) is the minimum kinetic energy that an atom in a solid needs to be permanently displaced from its site in the lattice to a defect position. It is also known as "displacement threshold energy" or just "displacement energy". In a crystal, a separate threshold displacement energy exists for each crystallographic direction. Then one should distinguish between the minimum (Td,min) and average (Td,ave) over all lattice directions' threshold displacement energies. In amorphous solids, it may be possible to define an effective displacement energy to describe some other average quantity of interest. Threshold displacement energies in typical solids are of the order of 10-50 eV.