强激光与粒子束2012，Vol.24Issue(4)：971-974,4.DOI:10.3788/HP1PB20122404.0971
低频段紧凑型同轴相对论返波振荡器
Low-band compact coaxial relativistic backward-wave oscillator
摘要
Abstract
Based on a novel compact P-band coaxial relativistic backward wave oscillator(RBWO) with only three periods slow wave structure (SWS), an L-band coaxial RBWO is proposed and investigated. Particle simulation results show that, with the 591 kV, 8. 2 kA electron beam guided by the 0. 8 T solenoidal field, the microwave is generated with the power of 1. 50 GW operating at about 1. 64 GHz. The interaction efficiency is about 31% and the optimized size of SWS is only φ96 mm×207 mm. Furthermore, the electrodynamics characteristics of the proposed device, expressly the longitudinal resonant modes and quality factors, are analyzed. Finally, a principle of design for low-band coaxial RBWO is presented with the results of P-band coaxial RBWO and L-band coaxial RBWO, i. e. , the length of SWS is about equal to the wavelength, the period length of SWS, and the depths of outer and inner conductor ripples are respectively about 5/13, 1/10, and 1/30 times the wavelength, the radius of electron beam is about 0. 7 times the average radius of outer conductor ripple, the longitudinal resonant mode is 0. 87π mode and the Q-factor is about 16.关键词
高功率微波/相对论返波振荡器/同轴慢波结构/低频段/纵向谐振模式Key words
high power microwave/relativistic backward wave oscillator/coaxial slow wave structure/low-band/ longitudinal resonant mode分类
信息技术与安全科学引用本文复制引用
高梁,钱宝良,葛行军,靳振兴,张军..低频段紧凑型同轴相对论返波振荡器[J].强激光与粒子束,2012,24(4):971-974,4.基金项目
国家高技术发展计划项目 （）
湖南省高校科技创新团队基金项目 （）
