‘Shot Effect’ in Temperature-Limited Dlodes

THE `shot effect' in temperature-limited (saturated) diodes has certain similarities with the `Johnson effect' observed in electrical resistances. Though the classical formula of the shot effect may be derived in several different ways, to my knowledge it has not yet been done on the same lines as those used for obtaining a formula for the Johnson e i ct. J. Berna, mont¹ has shown that the `Johnson effect' formula-namely, ē²v = 4RkT, may be obtained in the electronic theory of metals, using either the Lorentz or Sommerfeld theory of conductivity. The purpose of this note is to show that, following Bernamont's method for the Johnson effect, one may derive the classical formula of the shot effect.