中国物理B ›› 2007, Vol. 16 ›› Issue (3): 766-771.doi: 10.1088/1009-1963/16/3/034
刘濮鲲1, 谢鸿全2
Xie Hong-Quan(谢鸿全)a)† and Liu Pu-Kun(刘濮鲲)b)
摘要: A cold and uniform plasma-filled travelling wave tube with sinusoidally corrugated slow wave structure is driven by a finite thick annular intense relativistic electron beam with the entire system immersed in a strong longitudinal magnetic field. By means of the linear field theory, the dispersion relation for the relativistic travelling wave tube (RTWT) is derived. By numerical computation, the dispersion characteristics of the RTWT are analysed in different cases of various geometric parameters of the slow wave structure and plasma densities. Also the gain versus frequency for three different plasma densities and the peak gain of the tube versus plasma density are analysed. Some useful results are obtained on the basis of the discussion.
中图分类号: (Microwave tubes (e.g., klystrons, magnetrons, traveling-wave, backward-wave tubes, etc.))