Linear theory of a dielectric-loaded rectangular Cerenkov maser with a sheet electron beam

doi:10.1088/1674-1056/21/10/104103

Abstract A three-dimensional model of a dielectric-loaded rectangular Cerenkov maser with a sheet electron beam for the beam-wave interaction is proposed. Based on this model, the hybrid-mode dispersion equation is derived with the Borgnis potential function by using the field-matching method. Its approximate solution is obtained under the assumption of a dilute electron beam. By using the Ansoft high frequency structural simulator (HFSS) code, the electromagnetic field distribution in the interaction structure is given. Through numerical calculations, the effects of beam thickness, beam and dielectric-layer gap distance, beam voltage, and current density on the resonant growth rate are analysed in detail.

Keywords: rectangular Cerenkov maser beam-wave interaction hybrid-mode dispersion equation Borgnis potential function

Received: 06 January 2012
Revised: 09 April 2012
Accepted manuscript online:

PACS:	41.60.Bq	(Cherenkov radiation)
	94.20.wj	(Wave/particle interactions)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 60801031 and 10905032) and the Knowledge Innovation Project of Chinese Academy of Sciences (Grant No. YYYJ-1123-5).

Corresponding Authors: Chen Ye
E-mail: chenye07@mails.gucas.ac.cn

Cite this article:

Chen Ye (陈晔), Zhao Ding (赵鼎), Liu Wen-Xin (刘文鑫), Wang Yong (王勇), Wan Xiao-Sheng (万晓声) Linear theory of a dielectric-loaded rectangular Cerenkov maser with a sheet electron beam 2012 Chin. Phys. B 21 104103

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Linear theory of a dielectric-loaded rectangular Cerenkov maser with a sheet electron beam

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