1. Key Laboratory for Physical Electronics and Devices of the Ministry of Education, Xi'an Jiaotong University, Xi'an 710049, China; 2. Northwest Institute of Nuclear Technology, Xi'an 710024, China
Abstract A hybrid mode of one- and two-surface multipactor on the grooved dielectric surface is studied in detail using both an analytical approach and two-dimensional particle-in-cell (2D PIC) simulations. When the groove width L< eE0/(4π mef2), there are one-surface multipactor and one-order two-surface multipactor on the grooved dielectric surface, and only one slope of the groove has the multipactor anytime. When L< eE0/(4π mef2), both slopes may have the multipactors. The electron surface density of the multipactor discharge has a sharp increase at the length L< eE0/(4π mef2).
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