An improved secondary electrons energy spectrum model and its application in multipactor discharge

doi:10.1088/1674-1056/27/3/038401

中国物理B ›› 2018, Vol. 27 ›› Issue (3): 38401-038401.doi: 10.1088/1674-1056/27/3/038401

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇下一篇

An improved secondary electrons energy spectrum model and its application in multipactor discharge

Wan-Zhao Cui(崔万照), Heng Zhang(张恒), Yun Li(李韵), Yun He(何鋆), Qi Wang(王琪), Hong-Tai Zhang(张洪太), Hong-Guang Wang(王洪广), Jing Yang(杨晶)

1 National Key Laboratory of Science and Technology on Space Microwave, China Academy of Space Technology(Xi'an), Xi'an 710100, China;
2 School of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an 710049, China

收稿日期:2017-09-03 修回日期:2017-12-07 出版日期:2018-03-05 发布日期:2018-03-05
通讯作者: Wan-Zhao Cui E-mail:cuiwanzhao@126.com
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. U1537211, 11705142, and 11675278) and the National Key Laboratory Foundation, China (Grant No. 9140C530101150C53011).

An improved secondary electrons energy spectrum model and its application in multipactor discharge

Wan-Zhao Cui(崔万照)¹, Heng Zhang(张恒)¹, Yun Li(李韵)¹, Yun He(何鋆)¹, Qi Wang(王琪)¹, Hong-Tai Zhang(张洪太)¹, Hong-Guang Wang(王洪广)², Jing Yang(杨晶)¹

1 National Key Laboratory of Science and Technology on Space Microwave, China Academy of Space Technology(Xi'an), Xi'an 710100, China;
2 School of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an 710049, China

Received:2017-09-03 Revised:2017-12-07 Online:2018-03-05 Published:2018-03-05
Contact: Wan-Zhao Cui E-mail:cuiwanzhao@126.com
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. U1537211, 11705142, and 11675278) and the National Key Laboratory Foundation, China (Grant No. 9140C530101150C53011).

摘要/Abstract

摘要： Secondary electron emission (SEE) of metal and dielectric materials plays a key role in multipactor discharge, which is a bottle neck problem for high-power satelliate components. Measurements of both the secondary electron yield (SEY) and the secondary electron energy spectrum (SES) are performed on metal samples for an accurate description of the real SEE phenomenon. In order to simplify the fitting process and improve the simulation efficiency, an improved model is proposed for the description of secondary electrons (SE) emitted from the material surface, including true, elastic, and inelastic SE. Embedding the novel SES model into the electromagnetic particle-in-cell method, the electronic resonant multipactor in microwave components is simulated successfully and hence the discharge threshold is predicted. Simulation results of the SES variation in the improved model demonstrate that the multipactor threshold is strongly dependent on SES. In addition, the mutipactor simulation results agree quite well with the experiment for the practical microwave component, while the numerical model of SEY and SES fits well with the sample data taken from the microwave component.

关键词: secondary electron energy spectrum, multipactor simulation, vaccum breakdown, satellite application

Abstract: Secondary electron emission (SEE) of metal and dielectric materials plays a key role in multipactor discharge, which is a bottle neck problem for high-power satelliate components. Measurements of both the secondary electron yield (SEY) and the secondary electron energy spectrum (SES) are performed on metal samples for an accurate description of the real SEE phenomenon. In order to simplify the fitting process and improve the simulation efficiency, an improved model is proposed for the description of secondary electrons (SE) emitted from the material surface, including true, elastic, and inelastic SE. Embedding the novel SES model into the electromagnetic particle-in-cell method, the electronic resonant multipactor in microwave components is simulated successfully and hence the discharge threshold is predicted. Simulation results of the SES variation in the improved model demonstrate that the multipactor threshold is strongly dependent on SES. In addition, the mutipactor simulation results agree quite well with the experiment for the practical microwave component, while the numerical model of SEY and SES fits well with the sample data taken from the microwave component.

Key words: secondary electron energy spectrum, multipactor simulation, vaccum breakdown, satellite application

中图分类号: (Passive circuit components)

84.32.-y

52.40.Db (Electromagnetic (nonlaser) radiation interactions with plasma) 79.20.Ap (Theory of impact phenomena; numerical simulation)

崔万照, 张恒, 李韵, 何鋆, 王琪, 张洪太, 王洪广, 杨晶. An improved secondary electrons energy spectrum model and its application in multipactor discharge[J]. 中国物理B, 2018, 27(3): 38401-038401.

Wan-Zhao Cui(崔万照), Heng Zhang(张恒), Yun Li(李韵), Yun He(何鋆), Qi Wang(王琪), Hong-Tai Zhang(张洪太), Hong-Guang Wang(王洪广), Jing Yang(杨晶). An improved secondary electrons energy spectrum model and its application in multipactor discharge[J]. Chin. Phys. B, 2018, 27(3): 38401-038401.

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An improved secondary electrons energy spectrum model and its application in multipactor discharge

An improved secondary electrons energy spectrum model and its application in multipactor discharge

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