在磁场存在的情况下,气隙中失控的电子

Y. Mamontov, G. Mesyats, K. Sharypov, V. Shpak, S. Shunailov, M. Yalandin, N. Zubarev, O. Zubareva
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引用次数: 1

摘要

通过施加轴向磁场,可以从本质上减小在尖锥形阴极充气放电隙中产生的失控电子流的散度,这为形成密集的近轴快电子束的实际应用开辟了前景。在本工作中,我们考虑了决定束的径向尺度的因素。我们的分析表明,主要因素是由于与气体分子碰撞导致电子在磁力线上的扩散。考虑到这一现象,计算出的失控电子束半径与外加磁场大小的关系与实验数据一致。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Runaway electrons in an air gap in the presence of a magnetic field
The divergence of the runaway electron flow generated in an air-filled discharge gap with a sharp conical cathode can be essentially reduced by applying a guiding axial magnetic field, which opens up prospects for the practical use of formed dense paraxial bunches of fast electrons. In the present work, we consider factors that determine the radial scale of the bunch. Our analysis shows that the main factor is the diffusion of electrons across the magnetic field lines due to collisions with gas molecules. Calculations of the dependence of the runaway electron beam radius on the magnitude of the applied magnetic field, taking this phenomenon into account, agree with the experimental data.
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