Design and experiment of high-current low-pressure plasma-cathode e-gun

xie wen-kai; li xiao-yun; wang bin; meng lin; yan yang; gao xin-yan

Volume 18 Issue 02

Feb. 2006

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Article Navigation > High Power Laser and Particle Beams > 2006 > 18(02): 0-

wu jin-quan, lin zhao-xiang, song shu-yan, et al. Spatial distributions of laser-induced air plasmas[J]. High Power Laser and Particle Beams, 2007, 19.

Citation:

xie wen-kai, li xiao-yun, wang bin, et al. Design and experiment of high-current low-pressure plasma-cathode e-gun[J]. High Power Laser and Particle Beams, 2006, 18.

wu jin-quan, lin zhao-xiang, song shu-yan, et al. Spatial distributions of laser-induced air plasmas[J]. High Power Laser and Particle Beams, 2007, 19.

Citation:

xie wen-kai, li xiao-yun, wang bin, et al. Design and experiment of high-current low-pressure plasma-cathode e-gun[J]. High Power Laser and Particle Beams, 2006, 18.

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Design and experiment of high-current low-pressure plasma-cathode e-gun

1.
Institute of High Energy Electronics,University of Electronics Science and Technology of China,Chengdu 610054,China

Publish Date: 2006-02-15

Abstract

Abstract

The preliminary design of a new high-power low-pressure plasma-cathode e-gun is presented. Based on the hollow cathode effect and low-pressure glow discharge empirical formulas, the hollow cathode, the accelerating gap, and the working gas pressure region are given. The general experimental device of the low-pressure plasma cathode electron-gun generating high current density e-beam source is shown. Experiments has been done in continuous filled-in gases and gases-puff condition, and the discharging current of 150~200 A, the width of 60 μs and the collector current of 30~80 A, the width of 60 μs are obtaind. The results show that the new plasma cathode e-gun can take the place of material cathode e-gun, especially in plasma filled microwave tubes.
- high power microwave,
- plasma,
- plasma-cathode e-gun,
- glow discharge,
- hollow cathode

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