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Field distribution, HPM multipactor, and plasma discharge on the periodic triangular surface

Published online by Cambridge University Press:  14 April 2010

C. Chang ,
G.Z. Liu ,
J.Y. Fang ,
C.X. Tang ,
H.J. Huang ,
C.H. Chen ,
Q.Y. Zhang ,
T.Z. Liang ,
X.X. Zhu  and
J.W. Li
C. Chang*
Affiliation:
Department of Engineering Physics, Tsinghua University, Beijing, China
G.Z. Liu
Affiliation:
Northwest Institute of Nuclear Technology, Xi'an, Shaanxi, China
J.Y. Fang
Affiliation:
Northwest Institute of Nuclear Technology, Xi'an, Shaanxi, China
C.X. Tang
Affiliation:
Department of Engineering Physics, Tsinghua University, Beijing, China
H.J. Huang
Affiliation:
Northwest Institute of Nuclear Technology, Xi'an, Shaanxi, China
C.H. Chen
Affiliation:
Northwest Institute of Nuclear Technology, Xi'an, Shaanxi, China
Q.Y. Zhang
Affiliation:
Northwest Institute of Nuclear Technology, Xi'an, Shaanxi, China
T.Z. Liang
Affiliation:
Northwest Institute of Nuclear Technology, Xi'an, Shaanxi, China
X.X. Zhu
Affiliation:
Northwest Institute of Nuclear Technology, Xi'an, Shaanxi, China
J.W. Li
Affiliation:
Northwest Institute of Nuclear Technology, Xi'an, Shaanxi, China
*
Address correspondence and reprint requests to: Chao Chang, Northwest Institute of Nuclear Technology, P.O. Box 69-13, No. 28, Pingyu Road, Ba Qiao Xian, Shaanxi, People's Republic of China710024. E-mail: changc02@mails.tsinghua.edu.cn
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Abstract

The field distribution and the restraint effect of multipactor and plasma discharge on the periodic triangular surface have been theoretically and experimentally analyzed. It has been found by computational and simulative analysis that the periodic profile can quickly restrain or weaken multipactor and plasma discharge in low pressure within several microwave periods. Considering the field enhancement, increasing the slope angle, advancing the electric field, and lowering the frequency can enhance the multipactor suppression. X-band giga-watt high power microwave experiment with 20 ns short pulse was conducted. It was demonstrated that the periodic profile can effectively improve the breakdown threshold and slower the speed of tail erosion.

Keywords

Dielectric breakdownHigh power microwaveMultipactor and plasma suppressionPeriodic triangular surface
Type
Research Article
Information
Laser and Particle Beams , Volume 28 , Issue 1 , March 2010 , pp. 185 - 193
Copyright
Copyright © Cambridge University Press 2010

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