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- Title
Generation of narrow focused beams in a plasma-cathode electron gun.
- Authors
Kornilov, S. Yu.; Osipov, I. V.; Rempe, N. G.
- Abstract
The possibility of generating a narrow focused electron beam in a plasma-cathode electron gun has been studied. An operating mode in which the emitting plasma surface is deep in the emitting channel is optimal for obtaining the highest emission-current density. The beam diameter is reduced by a factor of 1.5–2.0 by choosing the operating mode of the plasma emitter. A two-lens focusing system is used to focus the electron beam. Studies have shown the possibility of generating beams with a power density five to seven times higher than that attained earlier in plasma-cathode guns. As a result of these studies, a plasma-cathode electron gun that allows generation of an electron beam with a diameter of ∼260 μm and a power of 3 kW at an accelerating voltage of 30 kV has been developed.
- Subjects
ELECTRON gun; ELECTRON beams; CATHODES; PLASMA gases; ELECTRONS
- Publication
Instruments & Experimental Techniques, 2009, Vol 52, Issue 3, p406
- ISSN
0020-4412
- Publication type
Article
- DOI
10.1134/S002044120903018X