Plasma electron source for cold-cathode discharge device or the like
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United States of America Patent
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-
Jul 3, 1984
Grant Date -
N/A
app pub date -
Feb 18, 1982
filing date -
Feb 18, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A plasma electron source has an apertured cathode, and a housing for defining a cavity behind the aperture. A trigger electrode, in communication with the cavity, is responsive to a short-duration trigger pulse for establishing plasma in the cavity. The plasma is sustained in the cavity subsequent to the termination of the trigger pulse by a bias circuit, which biases the cavity at a relatively low voltage with respect to the cathode for a period of time much longer than the duration of the trigger pulse.
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