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   Articles with "multipactor" as a keyword



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Flashover strength improvement and multipactor suppression in vacuum using surface charge pre-conditioning on insulator

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recommendations! Published in 2018 at "Journal of Applied Physics"

DOI: 10.1063/1.5048063

Abstract: Surface charging commonly appears on dielectrics in vacuum in the presence of electron bombardment, seriously aggravating the superficial withstand strength of assorted devices. Nonetheless, a pre-conditioning technique is introduced in this paper capitalizing on surface… read more here.

Keywords: surface; flashover strength; multipactor; pre conditioning ... See more keywords
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Suppression of single-surface multipactor discharges due to non-sinusoidal transverse electric field

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recommendations! Published in 2019 at "Physics of Plasmas"

DOI: 10.1063/1.5111734

Abstract: It is of importance to suppress single-surface multipactor discharges in high power microwave devices. In this work, both particle-in-cell (PIC) and Monte-Carlo simulations demonstrate that multipactor discharges can be significantly suppressed by a temporal Gaussian-type… read more here.

Keywords: multipactor discharges; surface; power; multipactor ... See more keywords
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A three-dimensional Dionne model for multipactor simulations

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recommendations! Published in 2020 at "Physics of Plasmas"

DOI: 10.1063/5.0004076

Abstract: The multipactor phenomenon is characterized by a very fast growth of the electronic population in Radio-Frequency (RF) devices under vacuum. As this effect limits the transmissible RF power and can harm RF systems, it has… read more here.

Keywords: three dimensional; multipactor simulations; multipactor; model ... See more keywords
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A 2 kW S-band RF source for multipactor research utilizing GaN HEMTs

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recommendations! Published in 2020 at "AIP Advances"

DOI: 10.1063/5.0009836

Abstract: A high power, pulsed RF source designated for use in multipactor research is described. Four gallium nitride high electron mobility transistors from Cree/Wolfspeed, capable of 700 W in long pulse mode (500 W rated output),… read more here.

Keywords: source multipactor; multipactor research; source; power ... See more keywords
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On the limits of multipactor in rectangular waveguides

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recommendations! Published in 2020 at "Physics of Plasmas"

DOI: 10.1063/5.0012833

Abstract: Multipactor in WR-284-like geometries is measured utilizing local and global detection techniques. To emulate conditions one may find in a waveguide filter structure while maintaining the fundamental microwave mode, a standard rectangular waveguide geometry with… read more here.

Keywords: gap; rectangular waveguides; multipactor rectangular; limits multipactor ... See more keywords
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Calculating multipactor susceptibility chart using a semi-analytic approach with improved accuracy

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recommendations! Published in 2020 at "Physics of Plasmas"

DOI: 10.1063/5.0024858

Abstract: We propose a semi-analytic approach to investigate the multipactor in parallel plate structures with improved accuracy. The effects of emission velocity and transit time of electrons are studied and their corresponding susceptibility charts are calculated.… read more here.

Keywords: semi analytic; susceptibility; multipactor; improved accuracy ... See more keywords
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Effects of external magnetic and electric field on multipactor and plasma breakdown of high-power microwave window

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recommendations! Published in 2023 at "Physics of Plasmas"

DOI: 10.1063/5.0146150

Abstract: In this work, we investigated the effects of an external magnetic field, a DC electrostatic field, and a normal rf electric field on the multipactor and plasma ionization breakdown process near a microwave window by… read more here.

Keywords: electric field; plasma breakdown; process; window ... See more keywords
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Experimental Verification of Multipactor Discharge Dynamics Between Ferrite Dielectric and Metal

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recommendations! Published in 2018 at "IEEE Transactions on Electron Devices"

DOI: 10.1109/ted.2018.2865164

Abstract: The underlying mechanisms of multipactor between dielectric and metal and the discharge threshold of practical dielectric components have been investigated numerically and experimentally in this paper. The reduction in secondary electron yield (SEY) and the… read more here.

Keywords: ferrite dielectric; dielectric metal; metal; multipactor ... See more keywords
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A Predictive Model for Multipactor Discharge in Coaxial Systems Based on Chaos Theory

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recommendations! Published in 2019 at "IEEE Transactions on Electron Devices"

DOI: 10.1109/ted.2019.2934457

Abstract: Multipactor is an electron discharge driven by secondary electron emission (SEE). Recently, a novel theoretical approach for multipactor based on principles from nonlinear dynamics and chaos theory has been introduced and applied to a parallel-plate… read more here.

Keywords: predictive model; emission; chaos theory; geometry ... See more keywords
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Multipactor Suppression by a Resonant Static Magnetic Field on a Dielectric Surface

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recommendations! Published in 2020 at "IEEE Transactions on Electron Devices"

DOI: 10.1109/ted.2020.3027271

Abstract: In this article, we study the suppression of the multipactor phenomenon on a dielectric surface by a resonant static magnetic field. A homemade Monte Carlo algorithm is developed for multipactor simulations on a dielectric surface… read more here.

Keywords: field; multipactor; magnetic field; electric field ... See more keywords

Multipactor-Triggering Powers’ Modelling of a WEST ICRH Antenna During RF Conditioning

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recommendations! Published in 2023 at "IEEE Transactions on Plasma Science"

DOI: 10.1109/tps.2023.3268293

Abstract: During radio frequency (RF) conditioning of the ion cyclotron resonance heating (ICRH) system on WEST, under vacuum, pressure rises are measured inside the antennas. A proposed hypothesis for the cause of this phenomenon is multipactor,… read more here.

Keywords: antenna conditioning; west icrh; side; icrh antenna ... See more keywords