NASA NTRS · 19850013181
Hollow cathode apparatus
Abstract
A hollow cathode apparatus is described, which can be rapidly and reliably started. An ignitor positioned upstream from the hollow cathode, generates a puff of plasma that flows with the primary gas to be ionized through the cathode. The plasma puff creates a high voltage breakdown between the downstream end of the cathode and a keeper electrode, to heat the cathode to an electron-emitting temperature.
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Aston, G.. 1984-10-02. Hollow cathode apparatus. https://ntrs.nasa.gov/citations/19850013181
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