【作者】 王战亮；

【导师】 宫玉彬；

【作者基本信息】 电子科技大学 ， 物理电子学， 2010， 博士

【摘要】 带状(或片状,高椭圆率)电子注器件,也被称为平板结构器件,是微波,毫米波电真空器件新的发展方向之一,也是一个正在被不断开拓的领域。由于带状电子注器件具有空间电荷场低,能够传输大电流等一些独特的优点,使它更适用于产生高频率,高功率的辐射。而高频率(频率高至太赫兹),高功率(功率高至吉瓦级)的电真空器件一直以来都是我们追求的目标,因此,对带状电子注器件的研究是非常必要的。本文对带状电子注的形成和稳定传输进行了深入的研究,主要工作如下:一、基于对轴对称收敛型皮尔斯枪研究,提出了设计了带状电子注电子枪的方法,并采用该电子枪直接发射了带状电子注。二、研究了采用磁四极子对圆柱形电子注进行水平方向扩散,垂直方向压缩,从而形成带状电子注的方法。三、提出并研究了椭圆螺线管压缩圆柱形电子注形成带状电子注的方法。四、研究了在螺线管磁场中带状电子注Diocotron不稳定性(即Diocotron模)的形成。分析了各个参数对Diocotron不稳定性的影响。五、对周期磁场结构(包括周期摇摆磁场,周期凹凸磁场)抑制Diocotron不稳定性,稳定传输带状电子注的条件进行了深入研究。六、提出了周期对称和非对称磁四极子能够稳定传输带状电子注,并通过分析得到了其稳定传输带状电子注的条件。七、分析了周期椭圆螺线管磁场,并对该磁场以及其稳定传输带状电子注的条件进行了系统研究。八、组建了带状电子注器件的实验平台,正在开展带状电子注器件的实验研究。通过本文的研究,在现有的条件下,带状电子注的形成和稳定传输(即聚焦并抑制Diocotron不稳定性)是可行的,进一步推动和发展带状电子注器件是必须也是现实的。本文的研究为进一步发展高功率、高频率带状电子注电真空器件打下了良好的基础。更多还原

【Abstract】 Sheet electron beam (or ribbon beam, high-elliptical beam) vacuum electronic devices, or planar devices, are one of the developing fields and a new branch of modern vacuum electronics. Sheet electron beam devices can be a new branch and suitable to produce high-power, high-frequency radioation, because of their unique virtues-be able to transport high current beam at reduced space charge field. In the twenty-first century, high-frequency(to teraherz), high-power(to gigawatt) are two most important development of modern vaccum electronics. Sheet electron beam device will be well boom in this background.In this paper, some basic research on sheet electron beam device are done and lised as the following:1. based on the research of Pierce gun, we design sheet electron beam gun and produce sheet electron beam. .2. we have acquired sheet electron beam from round electron beam, when the round beam pass through a quadrupole, because quadrupole can extant the electron beam in horizontal direction, while it can compress the electron beam in vertical direction.3. We acquire sheet electron beam by round electron beam pass through a elliptical solenoid.4. We have investigated the diocotron mode (diocotron instability) of sheet electron beam.5. We have investigated the conditions for stably transporting sheet electron beam in periodic magnetic field (include wiggler field and periodic cusped magnetic field).6. We have investigated the conditions for stably transporting sheet electron beam in periodic magnetic quadrupole (include symmetric and non-symmetric quadrupole).7. We have investigated the conditions for stably transporting sheet electron beam in periodic elliptical solenoid. 8. We have set up platform for experimental of sheet electron beam device. We have designed sheet electron beam BWO and are carrying on experimental.Based on our research, formatting and stably transporting sheet electron beam is possible. Research on sheet electron beam devices is urgent and real. The methods in this paper are viable ways for formation and focusing sheet electron beam and will be useful in further study and design of high-power, high-frequency sheet electron beam devices.更多还原