Multipactor radiation analysis within a waveguide region based on a frequency-domain representation of the dynamics of charged particles
A technique for the accurate computation of the electromagnetic fields radiated by a charged particle moving within a parallel-plate waveguide is presented. Based on a transformation of the time-varying current density of the particle into a time-harmonic current density, this technique allows the evaluation of the radiated electromagnetic fields both in the frequency and time domains, as well as in the near- and far-field regions. For this purpose, several accelerated versions of the parallel-plate Green’s function in the frequency domain have been considered. The theory has been successfully applied to the multipactor discharge occurring within a two metal-plates region. The proposed formulation has been tested with a particle-in-cell code based on the finite-difference time-domain method, obtaining good agreement.
Keywords: current density ; electrodynamics ; electromagnetic fields ; finite difference time-domain analysis ; frequency-domain analysis ; Green's function methods ; microwave switches ; waveguides ; Periodic Structures ; Greens-Function ; Ewald Method ; Wake-Field ; Discharge ; Accelerator ; Simulation ; Breakdown ; Modes ; 2-D
Record created on 2010-01-26, modified on 2016-08-08