Development of plasma cathode electron guns
Development of plasma cathode electron guns
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DOI：
10.1063/1.873420
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发表时间：
1999-04
影响因子：
2.2
通讯作者：
E. Oks;P. M. Schanin
中科院分区：
文献类型：
--
作者：
E. Oks;P. M. Schanin
综述了近年来等离子体阴极电子枪的实验研究和发展现状，包括在各个技术领域的一些新的升级和应用。这种电子枪的吸引力是因为它能够在脉冲和稳定工作模式下产生大电流、宽光束或聚焦光束。等离子体阴极电子枪的一个重要特征是没有热离子阴极，这一特征导致即使在具有侵蚀性的背景气体介质和前真空气体压力范围内(如通过机械泵实现)，也能实现长寿命和可靠的工作。根据所需的束流参数，等离子体阴极电子枪可以使用不同的等离子体放电系统，如真空弧光、压缩气体弧光、中空阴极辉光，以及在交叉E×B场中的两种放电：彭宁放电和磁控放电。目前，等离子体阴极电子枪为束流提供了横截面。
The status of experimental research and ongoing development of plasma cathode electron guns in recent years is reviewed, including some novel upgrades and applications to various technological fields. The attractiveness of this kind of e-gun is due to its capability of creating high current, broad or focused beams, both in pulsed and steady-state modes of operation. An important characteristic of the plasma cathode electron gun is the absence of a thermionic cathode, a feature which leads to long lifetime and reliable operation even in the presence of aggressive background gas media and at fore-vacuum gas pressure ranges such as achieved by mechanical pumps. Depending on the required beam parameters, different kinds of plasma discharge systems can be used in plasma cathode electron guns, such as vacuum arcs, constricted gaseous arcs, hollow cathode glows, and two kinds of discharges in crossed E×B fields: Penning and magnetron. At the present time, plasma cathode electron guns provide beams with transvers...