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Title: Self-consistent simulation of radio frequency multipactor on micro-grooved dielectric surface

Abstract

The multipactor plays a key role in the surface breakdown on the feed dielectric window irradiated by high power microwave. To study the suppression of multipactor, a 2D electrostatic PIC-MCC simulation code was developed. The space charge field, including surface deposited charge and multipactor electron charge field, is obtained by solving 2D Poisson's equation in time. Therefore, the simulation is self-consistent and does not require presetting a fixed space charge field. By using this code, the self-consistent simulation of the RF multipactor on the periodic micro-grooved dielectric surface is realized. The 2D space distributions of the multipactor electrons and space charge field are presented. From the simulation results, it can be found that only half slopes have multipactor discharge when the slope angle exceeds a certain value, and the groove presents a pronounced suppression effect on the multipactor.

Authors:
;  [1];  [2]; ; ;  [3]
  1. Key Laboratory for Physical Electronics and Devices of the Ministry of Education, Xi'an Jiaotong University, Xi'an 710049 (China)
  2. (China)
  3. Northwest Institute of Nuclear Technology, Xi'an, Shaanxi 710024 (China)
Publication Date:
OSTI Identifier:
22413034
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 117; Journal Issue: 5; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; COMPUTERIZED SIMULATION; DIELECTRIC MATERIALS; ELECTRIC DISCHARGES; ELECTRONS; IRRADIATION; MICROWAVE RADIATION; P CODES; PERIODICITY; RADIOWAVE RADIATION; RF SYSTEMS; SPACE CHARGE; SURFACES

Citation Formats

Cai, Libing, Wang, Jianguo, E-mail: wanguiuc@mail.xjtu.edu.cn, Northwest Institute of Nuclear Technology, Xi'an, Shaanxi 710024, Cheng, Guoxin, Zhu, Xiangqin, and Xia, Hongfu. Self-consistent simulation of radio frequency multipactor on micro-grooved dielectric surface. United States: N. p., 2015. Web. doi:10.1063/1.4907683.
Cai, Libing, Wang, Jianguo, E-mail: wanguiuc@mail.xjtu.edu.cn, Northwest Institute of Nuclear Technology, Xi'an, Shaanxi 710024, Cheng, Guoxin, Zhu, Xiangqin, & Xia, Hongfu. Self-consistent simulation of radio frequency multipactor on micro-grooved dielectric surface. United States. doi:10.1063/1.4907683.
Cai, Libing, Wang, Jianguo, E-mail: wanguiuc@mail.xjtu.edu.cn, Northwest Institute of Nuclear Technology, Xi'an, Shaanxi 710024, Cheng, Guoxin, Zhu, Xiangqin, and Xia, Hongfu. Sat . "Self-consistent simulation of radio frequency multipactor on micro-grooved dielectric surface". United States. doi:10.1063/1.4907683.
@article{osti_22413034,
title = {Self-consistent simulation of radio frequency multipactor on micro-grooved dielectric surface},
author = {Cai, Libing and Wang, Jianguo, E-mail: wanguiuc@mail.xjtu.edu.cn and Northwest Institute of Nuclear Technology, Xi'an, Shaanxi 710024 and Cheng, Guoxin and Zhu, Xiangqin and Xia, Hongfu},
abstractNote = {The multipactor plays a key role in the surface breakdown on the feed dielectric window irradiated by high power microwave. To study the suppression of multipactor, a 2D electrostatic PIC-MCC simulation code was developed. The space charge field, including surface deposited charge and multipactor electron charge field, is obtained by solving 2D Poisson's equation in time. Therefore, the simulation is self-consistent and does not require presetting a fixed space charge field. By using this code, the self-consistent simulation of the RF multipactor on the periodic micro-grooved dielectric surface is realized. The 2D space distributions of the multipactor electrons and space charge field are presented. From the simulation results, it can be found that only half slopes have multipactor discharge when the slope angle exceeds a certain value, and the groove presents a pronounced suppression effect on the multipactor.},
doi = {10.1063/1.4907683},
journal = {Journal of Applied Physics},
number = 5,
volume = 117,
place = {United States},
year = {Sat Feb 07 00:00:00 EST 2015},
month = {Sat Feb 07 00:00:00 EST 2015}
}
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