Physics:Fermi plateau

A range of high energies, , where the energy loss of a particle traversing a medium no longer increases with increasing particle energy. Up to this plateau, the loss of energy ( Energy Loss) of a traversing particle increases logarithmically with energy (relativistic rise ). The onset and the height of the Fermi plateau are due to the density correction cancelling the relativistic rise; they vary for different media. Calculations and measurements are published for a wide range of solids, liquids and gases, and show good agreement; e.g. Cobb76, for gases Burq81, Walenta79a or Allison76.