Dynamic shielding of a charge in a metal |
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Authors: | H.E. Rorschach |
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Affiliation: | Physics Department, Rice University, Houston, Texas 77001 USA |
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Abstract: | A discussion of the shielding of a charged particle in a current-carrying conductor is given that is based on the linearized Thomas-Fermi approximation. An expression for the force on a particle of charge q is obtained from which the value of the electric field Ec in the conductor may be found: It is shown that the force on the particle has the form to second order in the charge q, where E0 is the electric field at large distances from q, e is the charge of the carrier, and γ is a material-dependent constant. The shielding correction has the character of a “wind-force,” and the electric field in the conductor is given by Ec = E0. |
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