Relativistic energy loss in a dispersive medium

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The electron energy loss in a dispersive medium is obtained using macroscopic electrodynamics taking advantage of a static frame of reference. Relativistic corrections are described in terms of a dispersive Lorentz factor obtained by replacing the vacuum velocity c by the characteristic phase velocity c/n, where n is the complex index of refraction. The angle-resolved energy-loss spectrum of a Drude conductor is analyzed in detail and it is shown that the low-energy peak due to Ohmic losses is enhanced compared to the classical approximation.
TidsskriftPhysical Review E (Statistical, Nonlinear, and Soft Matter Physics)
Sider (fra-til)022901-022906
StatusUdgivet - 2002