Abstract
AbstractThe Debye screening potential is generalized for an arbitrary isotropic distribution function and the dynamic screening for a cold streaming plasma is calculated. In both cases the structure of the screening length is the same, however the potentials are different. For the warm plasma under arbitrary drift the ballistic model is compared with the self consistent dielectric model. The validity of the Drude ansatz is shown to hold as long as the electron oscillations parallel to its motion are negligible. Their energy is by twice the Coulomb logarithm lower than in perpendicular direction. Finally, the problem of the Coulomb singularity is addressed. (© 2013 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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