Space-charge-limiting current of a relativistic electron beam propagating in a rippled-wall waveguide

被引：3
|
作者：
Qian, BL [1 ]
Lei, YZ
Liu, YG
Li, CL
机构：
[1] Natl Univ Def Technol, Dept Appl Phys, Changsha 410073, Peoples R China
[2] Zhengzhou Univ, Ctr Electromagnet Res, Zhengzhou 450002, Peoples R China
来源：
CHINESE PHYSICS LETTERS | 2000年 / 17卷 / 03期
关键词：
D O I：
10.1088/0256-307X/17/3/020
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A fluid model is used to derive the space-charge-limiting current of a relativistic electron beam drifting in a rippled-wall cylindrical waveguide. It is found that an enhancement of the space-charge-limiting current is found as long as optimum values of the ripple wavelength and amplitude are chosen. However, a very small ripple wavelength of the waveguide may reduce the space-charge-limiting current rapidly. The result should be of interest to the operation of backward-wave oscillators.
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页码：212 / 214
页数：3
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