MODE SELECTION BY OHMIC LOSSES IN LONGITUDINALLY CORRUGATED CAVITIES OF SUB-THz SECOND-HARMONIC GYROTRONS

被引：0
|
作者：
Tkachova, T. I. [1 ]
Shcherbinin, V. I. [1 ]
Tkachenko, V. I. [1 ,2 ]
机构：
[1] Kharkov Inst Phys & Technol, Natl Sci Ctr, Kharkov, Ukraine
[2] Kharkov Natl Univ, Kharkov, Ukraine
来源：
PROBLEMS OF ATOMIC SCIENCE AND TECHNOLOGY | 2019年 / 04期
关键词：
D O I：
暂无
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
Ohmic wall losses are proposed as a means for improving the mode selection in a cylindrical gyrotron cavity with longitudinal wedge-shaped corrugations. Such losses depend on mode frequency and geometrical parameters of the corrugations. For cavity of the 0.4-THz second-harmonic gyrotron we find the corrugation depth, which corresponds to maximum ohmic losses of the competing modes excited at the first (fundamental) cyclotron resonance, as well as to reasonably low losses of the operating mode. For this depth, we determine the number of corrugations and their width, which ensure the maximum enhancement of the ohmic wall losses of the fundamental modes with respect to those of the operating second-harmonic mode, together with minimum conversion of the operating second-harmonic mode to higher Bloch harmonics. Parameters of the corrugations in hand are practicable.
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页码：31 / 34
页数：4
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