Experimental observations of gated field emitter failures
- 1 March 1992
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Electron Device Letters
- Vol. 13 (3) , 167-169
- https://doi.org/10.1109/55.144999
Abstract
Intrinsic failure events in gated field emitters have been studied. The gate-emitter voltage, typically 140 V during operation, drops to 10-70 V at the onset of the failure. Measurements with a diagnostic probe indicate that plumes of ions and electrons are ejected into vacuum with the ion current typically 10% of the electron current. The arc voltage and the ion-to-electron current ratio are characteristic of a cathodic vacuum arc. For series resistors less than 1 k Omega , the arc is continuous, whereas for series resistors greater than 10 k Omega , the arc is intermittent.Keywords
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