Elscint Ltd.

David Fleischer

A Robert Sohval

Gerald Cooperstein

Shyke A Goldstein

David R Hearn

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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Boxford, MA, United States of America

David Fleischer