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2 Dec 2002

Volume 81, Issue 23, pp. 4315-4476

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Low-pressure, high-current hollow cathode with a ferroelectric plasma source

A. Krokhmal, J. Z. Gleizer, Ya. E. Krasik, and J. Felsteiner

Appl. Phys. Lett. 81, 4341 (2002); http://dx.doi.org/10.1063/1.1527695 (3 pages) | Cited 6 times

Online Publication Date: 25 November 2002

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We report the parameters of a hollow cathode with a ferroelectric plasma source incorporated in it. It was found that this source allows the ignition and sustaining of a high-current discharge (⩽1.4 kA, ⩽ 2×10−5 s) at N2 gas pressure of (3–5)×10−4 Torr. It was shown that ∼85% of the discharge current is emitted by the ferroelectric sample. The plasma in the cathode acquires a positive potential (⩽50 eV) with respect to the anode and the plasma density and temperature are ⩽ 8×1012 cm−3 and ⩽18 eV, respectively. Generation of an electron beam (0.3–1.6 kA, 300 ns) was demonstrated under an accelerating pulse ⩽300 kV. © 2002 American Institute of Physics.
Show PACS
52.80.Hc Glow; corona
52.50.Dg Plasma sources
52.25.-b Plasma properties
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