Phys. Rev. E 79, 046604 (2009) [9 pages]Multipactor radiation analysis within a waveguide region based on a frequency-domain representation of the dynamics of charged particlesReceived 8 October 2008; published 8 April 2009 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. © 2009 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevE.79.046604
DOI:
10.1103/PhysRevE.79.046604
PACS:
41.20.−q, 52.20.Dq, 52.35.Hr, 41.60.−m
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