阴极处有场枪聚焦电子束的特点

2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE) Pub Date : 2020-09-24 DOI:10.1109/APEDE48864.2020.9255529

N. A. Alekseeva, I. N. Afonin, A. Y. Kivokurtsev, V. I. Rogovin

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引用次数: 0

摘要

研究了阴极磁场大小对电子束特性的影响。结果表明，当Bc增加到4 mTl时，B1-B3值的调整不需要改变，因为脉动和平均半径的变化小于10%。然而，当Bc≥6 mTl时，需要对光束与MPFS的匹配进行调整。为了减少Bc值的扩散，提出了对现有的MPFS磁化技术进行调整的方法。

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Features of Focusing Electron Beams by Guns with a Field at the Cathode

Investigations were made of the effect of the magnitude of the magnetic field at the cathode on the characteristics of the electron beam. It was shown that with an increase in Bc to 4 mTl, no change in the adjustment of B1-B3 values is required, since the change in pulsations and average radius is less than 10%. However, for Bc ≥ 6 mTl, it is necessary to tuning the matching of the beam with MPFS. To minimize the spread of Bc values, it is proposed to adjust the existing technology for magnetizing MPFS.

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2020 International Conference on Actual Problems of Electron Devices Engineering (APEDE)

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