Radiation of electromagneticwaves by a spheroidal charged drop oscillating in a uniform electrostatic field

Abstract

The dispersion relation is derived for a spheroidal charged drop oscillating in a uniform electrostatic field and radiating electromagnetic waves in the first and second orders with respect to the dimensionless oscillation amplitude and the steady-state deformation, respectively. For an individual drop and a model cloud the intensity of the electromagnetic radiation and the frequency bandwidth are estimated as functions of the drop dimensions and charge and the external electric field strength.