Linear analysis of 170 GHz cylindrical and confocal gyrotron

被引：0
|
作者：
Yang, Youwei [1 ]
Yu, Sheng [1 ]
机构：
[1] Univ Elect Sci & Technol China, Terahertz Sci & Technol Res Ctr, Chengdu 610054, Peoples R China
来源：
JOURNAL OF PLASMA PHYSICS | 2016年 / 82卷
关键词：
EXTERNAL MAGNETIC-FIELD; MODE COMPETITION; WAVE GYROTRONS; MILLIMETER; RESONATOR; MICROWAVE;
D O I：
10.1017/S0022377816000738
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
In this paper, the mode density, coupling coefficient, eigenfrequencies, quality factors and starting currents of a 170 GHz cylindrical and confocal gyrotron are studied based on the linear theory. Results show that the mode density in the confocal cavity greatly decrease due to the diffraction properties. Modes in the confocal cavity have lower quality factors than the modes in cylindrical cavity, hence the starting currents are higher than the latter. The confocal gyrotron is more stable than the cylindrical gyrotron when operating at large current. Meanwhile, through altering the mirror width, quality factors together with the starting current of the confocal modes are adjustable.
引用
收藏
页码：1 / 9
页数：9
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