Analysis of Multipactor Effect in a Partially Dielectric-Loaded Rectangular Waveguide

• Published in: IEEE transactions on plasma science Vol. 47; no. 1; pp. 259 - 265
• Main Authors: Berenguer, Andres, Coves, Angela, Mesa, Francisco, Bronchalo, Enrique, Gimeno, Benito
• Format: Journal Article
• Language: English
• Published: New York IEEE 01-01-2019; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Charge distribution; Computer simulation; Dielectrics; Discharges (electric); Electric fields; Electric potential; Electromagnetic fields; Electron trajectories; Equations of motion; Multipactor; Multipactor discharges; Radio frequency; Rectangular waveguides; secondary emission; Surface waves; Wave propagation; waveguide; Waveguide components
• ISSN: 0093-3813; 1939-9375
• DOI: 10.1109/TPS.2018.2880652

This paper presents a study of the multipactor effect in a partially dielectric-loaded rectangular waveguide. To obtain the simulations presented in this paper, a detailed analysis of the dynamics of the electron inside this waveguide has been performed, taking into account the radio frequency electromagnetic fields propagating in the waveguide and the dc electric field that appears because of the charging of the dielectric layer. This electrostatic field is obtained by computing the electric potential produced by an arbitrary charge distribution on the dielectric layer in a dielectric-loaded waveguide. The electron trajectory is then found by numerically solving the equations of motion. The results obtained show that multipactor discharges do turn off by themselves under certain circumstances when they occur in such dielectric-loaded waveguide.