Interaction of a point charge with the surface of a uniaxial dielectric
1 Faculté des Sciences de Base, Ecole Polytechnique Fédérale de Lausanne (EPFL) - CH-1015 Lausanne, Switzerland
2 Department of Theoretical Physics, J. Stefan Institute and Department of Physics, Faculty of Mathematics and Physics, University of Ljubljana - SI-1000 Ljubljana, Slovenia, EU
Received: 4 April 2013
Accepted: 7 April 2013
We analyze the force on a point charge moving at relativistic speeds parallel to the surface of a uniaxial dielectric. Two cases are examined: a lossless dielectric with no dispersion and a dielectric with a plasma-type response. The treatment focuses on the peculiarities of the strength and direction of the interaction force as compared to the isotropic case. We show that a plasma-type dielectric can, under specific conditions, repel the point charge.
PACS: 41.20.-q – Applied classical electromagnetism / 41.60.-m – Radiation by moving charges / 41.75.-i – Charged-particle beams
© EPLA, 2013