Suppressing double-metal-surface resonant multipactor by three dimensional wavy surface.

Here, a method to suppress resonant multipaction in microwave systems is proposed in which the radio frequency system's metal plates are patterned with a three-dimensional periodic ripple profile in which each unit is two orders smaller than the radio frequency wavelength. The multipaction-inhibiting mechanism was studied analytically and with a particle-in-cell simulation. The analytical and three-dimensional electromagnetic simulated field distribution of the rotationally symmetric surface structures shows the evanescent E-field characteristics in the ripple valleys, which increase the electron staid time and the temporal dispersion of the secondary electron generation, as well as causing the electrons to deviate from the resonant phase that causes multipaction. [ABSTRACT FROM AUTHOR]