相对论磁控管中自磁场的影响
Self-magnetic field in relativistic magnetron
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摘要: 针对相对论磁控管中自磁场的产生与分布、自磁场对电子运动的影响以及自磁场对互作用的影响进行了深入分析。分析认为，由于自磁场分布的不对称，自磁场对不同区域电子束的作用不同。加速器一侧的电子束受到更明显的自磁场作用，促使此区域的电子束角向速度增加，直接激化模式竞争。同时，如果阴极比较靠近加速器一侧的1/4区域(距磁控管对称中心大约1/4高度），模式竞争将进一步被激化。Abstract: This paper explores the generation and distribution, the influences on electron motion and interactions of the self-magnetic field in the relativistic magnetron. It is found that the electron beams located close to the accelerator are more obviously influenced by the self magnetic field, leading to the speeding in the angular motion of electron beams, and the mode competition intensifies. Meanwhile, if the cathode lays closer to the accelerator, especially in the region adjacent to the 1/4 length of anode, the mode competition will be further intensified.
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Key words:
- relativistic magnetron /
- high power microwave /
- self-magnetic field /
- space-charge field
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