在迴旋管中采用中等偏心率椭圆横截面谐振腔的探讨
THE RESEARCH OF RESONANT CAVITY W1TH ELLIPTICAL CROSS-SECTION AT MODERATE ECCENTRICITY IN GYROTRON
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摘要: 本文综述了几种在迴旋管中采用大横截面谐振腔的办法,计算了中等偏心率椭圆波导各TE模的归一化截止频率。归一化截止频率的数据表明,用椭圆横截面谐振腔的迴旋管具备以下特性:(1)谐振腔体积大;(2)可以振荡的工作模式少;(3)可以使用大直径电子束;(4)可以工作于低次角向腔模。
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关键词:
Abstract: In this paper, several types of resonant cavities with large transverse cross-section used in gyrotron are briefly reviewed. The method of caleulating the cutoff frequeneies of TE mode of elliptical waveguides with moderate eccentricities is given. From the cal-culated data of cutoff frequencies, it is shown that the gyrotron with elliptical cavity has the following characteristics: (1) a large volume cavity can be used; (2) the dcn-sity of modes which can oscillate is rare; (3) it is allowable to use an electron beam with a large diameter; (4) it is possible to use a cavity mode with low azimuthal number. -
A. V. Gaponov, Int. J. Electronics, 51(1981)4, 277.[2]L. J. Chu, J. Appl. Phys., 9(1938), 583.[3]J. G. Kretzschmar, IEEE Trans. on MTT, MTT-18(1970), 547.[4]N. W. McLachlan, Theory and Application of Mathieu Functions, Oxford, 1947. -
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