Zobrazeno 1 - 10
of 65
pro vyhledávání: '"De-Qi Wen"'
Publikováno v:
High Voltage, Vol 8, Iss 6, Pp 1095-1114 (2023)
Abstract Recent progress made in the prediction, characterisation, and mitigation of multipactor discharge is reviewed for single‐ and two‐surface geometries. First, an overview of basic concepts including secondary electron emission, electron ki
Externí odkaz:
https://doaj.org/article/62ff46cdeba14f0aa7b983774512f932
Autor:
De-Qi Wen, Janez Krek, Jon Tomas Gudmundsson, Emi Kawamura, Michael A. Lieberman, John P. Verboncoeur
Publikováno v:
IEEE Transactions on Plasma Science. 50:2548-2557
Autor:
De-Qi Wen, Janez Krek, Jon Tomas Gudmundsson, Emi Kawamura, Michael A. Lieberman, Peng Zhang, John P Verboncoeur
Publikováno v:
Plasma Sources Science and Technology.
In the past three decades, first principles-based fully kinetic Particle-in-Cell Monte Carlo collision (PIC/MCC) simulations have been proven to be an important tool for the understanding of the physics of low pressure capacitive discharges. However,
Publikováno v:
IEEE Transactions on Plasma Science. 49:3284-3292
This article briefly reviews the theory and modeling of single-surface multipactor discharge on a dielectric, focusing on recent studies on two-frequency RF-field-induced multipactor. A novel multiparticle Monte Carlo simulation model with adaptive t
Publikováno v:
Physical review letters. 129(4)
In this Letter, the novel physics of higher harmonic (HH) generation of the normal electric field near a dielectric surface is reported in multipactor induced plasma ionization breakdown, as determined by kinetic particle-in-cell simulations. The obs
Publikováno v:
2021 IEEE International Conference on Plasma Science (ICOPS).
Multipactor discharges are widely observed in rf accelerators, high power microwave transmission and space-based communication systems [1] - [2] . Understanding the fundamental physics of the transit multipactor and ionization breakdown is important.
Autor:
Janez Krek, John P. Verboncoeur, Emi Kawamura, Michael A. Lieberman, De-Qi Wen, Jon Tomas Gudmundsson
Publikováno v:
2021 IEEE International Conference on Plasma Science (ICOPS).
Particle-in-cell Monte Carlo collision (PIC/MCC) simulations are important for understanding low pressure low-temperature discharge dynamics, since no assumptions are needed to determine the electron energy distribution function. Benchmark work is ne
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Publikováno v:
Applied Physics Letters. 121:164103
Multipactor discharge near an rf window is a key limiting factor in high power microwave systems. In this work, we report special features of dielectric multipactor susceptibility under a Gaussian-type waveform as a function of the rf power density o
Publikováno v:
Plasma Sources Science and Technology. 31:095004
In this work, we comprehensively investigate the generation of higher harmonic (HH) electric fields normal to the applied rf electric field in multipactor-coexisting plasma breakdown by fully kinetic particle-in-cell (PIC) simulations and a theoretic