Relativistic multiwave Cherenkov generators of millimeter-wavelength range
Relativistic multiwave Cherenkov generators of millimeter-wavelength range
复制标题
DOI：
10.1117/12.391808
复制
发表时间：
2000-07
期刊：
影响因子：
--
通讯作者：
V. Koshelev;V. Popov
中科院分区：
文献类型：
--
作者：
V. Koshelev;V. Popov
实验研究了TM01模通带高频边界附近的一段过模慢波结构(SWS)在8 mm波长范围内的产生与SWS长度和电子束几何形状的关系。在此基础上，对两段式多波切伦科夫发生器进行了优化设计。实现了8.84 mm波长辐射的产生。辐射到大气中的功率为500-600 mW，效率为6-7%，半高脉冲宽度为20 ns，光谱宽度不超过0.5%。证明了在椭球形空心电子束条件下，在单截面慢波结构中获得功率为150 mW的线偏振辐射的可能性。
An experimental investigation of the generation in a 8-mm wavelength range in a one-sectional overmoded slow-wave structure (SWS) near the high-frequency boundary of the TM01-mode passband versus the SWS length and electron beam geometry has been made. An optimization of a two-sectional multiwave Cerenkov generator has been carried out on the basis of the obtained results. The generation of the radiation with a 8.84-mm wavelength has been realized. The power radiated into the atmosphere was 500 - 600 MW at the efficiency of 6 - 7%, 20-ns pulse length at a half-maximum, and spectrum width being not over 0.5%. The possibility to obtain the linearly polarized radiation with the power to 150 MW in a one-sectional SWS under condition of using a hollow electron beam with an ellipsoidal profile has been shown.