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(一)引言 电子迴旋脉塞(Gyrotron)作为一类新型的快波器件,可在毫米、亚毫米波段有效地产生高功率相干辐射,标志着微波电子学的一大突破。 Gyrotron与普通微波管在作用机理上有很大的区别。它采用光滑波导或过模谐振腔作为高频结构,取代了传统的慢波电路或谐振腔。Gyrotron为快波型器件,而微波管一般为慢波型器件。不久前,有人提出利用慢波互作用的变态迴旋脉塞器件即weibel型器件。Gyrotron快波型器件的作用机理来自迴旋脉塞不稳定性,而Weibel型慢波器件的
(1) Introduction Gyrotron, as a new type of fast wave device, can effectively generate high-power coherent radiation in the millimeter and sub-millimeter wave bands, marking a major breakthrough in microwave electronics. Gyrotron and ordinary microwave tube in the mechanism of action is very different. It uses a smooth waveguide or over-mode resonator as a high-frequency structure, replacing the traditional slow-wave circuit or resonator. Gyrotron is a fast-wave device, while a microwave tube is generally a slow-wave device. Not long ago, we have proposed the use of slow-wave interaction of the metamorphic gyroscope plug device that weibel-type devices. The mechanism of gyrotron fast-wave devices comes from the instability of the gyrotrons, and the slow-wave devices of the Weibel type