title: Smith-Purcell radiation in the high conductivity and plasma frequency limits.
abstract: Radiation is calculated from currents produced by a nonrelativistic point charge that moves at a constant velocity above a conducting grating. Two different limits are considered. In the high conductivity limit, the surface charge is calculated from a nonretarded image charge, surface currents from the continuity equation, and the far field vector potential from the surface current. In the plasma frequency limit of the grating substrate a nonretarded electric potential is calculated from a two-region problem, bulk current from an interior potential, and the far field vector potential from the bulk current.
authors.forename: J C
authors.initials: JC
authors.lastname: McDaniel
authors.forename: D B
authors.initials: DB
authors.lastname: Chang
authors.forename: J E
authors.initials: JE
authors.lastname: Drummond
authors.forename: W W
authors.initials: WW
authors.lastname: Salisbury