Linear analysis of a three-dimensional rectangular Cerenkov maser with a sheet electron beam

doi:10.1088/1674-1056/20/10/108402

中国物理B ›› 2011, Vol. 20 ›› Issue (10): 108402-108402.doi: 10.1088/1674-1056/20/10/108402

Linear analysis of a three-dimensional rectangular Cerenkov maser with a sheet electron beam

赵鼎¹, 王勇¹, 陈晔²

(1)Key Laboratory of High Power Microwave Sources and Technologies, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China; (2)Key Laboratory of High Power Microwave Sources and Technologies, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China; Graduate University of the Chinese Academy of Sciences, Beijing 100049, China

收稿日期:2011-03-29 修回日期:2011-05-12 出版日期:2011-10-15 发布日期:2011-10-15
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 60801031).

Linear analysis of a three-dimensional rectangular Cerenkov maser with a sheet electron beam

Chen Ye(陈晔)^a)b)^†, Zhao Ding(赵鼎)^a), and Wang Yong(王勇)^a)

^a Key Laboratory of High Power Microwave Sources and Technologies, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China; ^b Graduate University of the Chinese Academy of Sciences, Beijing 100049, China

Received:2011-03-29 Revised:2011-05-12 Online:2011-10-15 Published:2011-10-15
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 60801031).

摘要/Abstract

摘要： A linear theory of a rectangular Cerenkov maser (RCM) with a sheet electron beam is developed by using the field-match method. Based on the three-dimensional beam-wave interaction model proposed in this paper, a hybrid-mode dispersion equation and its analytical solution are derived for the RCM. Through numerical calculations, the effects of the beam-grating gap, beam thickness, current density, beam voltage and waveguide width on the linear growth rate are analysed. Moreover, the performance difference between the RCM with the closed transverse boundary and that with the upper open boundary is compared. The results show that the closed RCM model can avoid the effect of RF radiation on beam-wave interaction, which is more rational for practical applications.

关键词: Cerenkov maser, field-match method, beam-wave interaction, hybrid-mode dispersion, growth rate

Abstract: A linear theory of a rectangular Cerenkov maser (RCM) with a sheet electron beam is developed by using the field-match method. Based on the three-dimensional beam-wave interaction model proposed in this paper, a hybrid-mode dispersion equation and its analytical solution are derived for the RCM. Through numerical calculations, the effects of the beam-grating gap, beam thickness, current density, beam voltage and waveguide width on the linear growth rate are analysed. Moreover, the performance difference between the RCM with the closed transverse boundary and that with the upper open boundary is compared. The results show that the closed RCM model can avoid the effect of RF radiation on beam-wave interaction, which is more rational for practical applications.

Key words: Cerenkov maser, field-match method, beam-wave interaction, hybrid-mode dispersion, growth rate

中图分类号: (Masers; gyrotrons (cyclotron-resonance masers))

84.40.Ik

94.05.Pt (Wave/wave, wave/particle interactions) 41.60.Bq (Cherenkov radiation) 41.20.Jb (Electromagnetic wave propagation; radiowave propagation)

陈晔, 赵鼎, 王勇. Linear analysis of a three-dimensional rectangular Cerenkov maser with a sheet electron beam[J]. 中国物理B, 2011, 20(10): 108402-108402.

Chen Ye(陈晔), Zhao Ding(赵鼎), and Wang Yong(王勇) . Linear analysis of a three-dimensional rectangular Cerenkov maser with a sheet electron beam[J]. Chin. Phys. B, 2011, 20(10): 108402-108402.

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Linear analysis of a three-dimensional rectangular Cerenkov maser with a sheet electron beam

Linear analysis of a three-dimensional rectangular Cerenkov maser with a sheet electron beam

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