Field emission electron source
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United States of America Patent
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May 2, 2000
Grant Date -
N/A
app pub date -
Jun 27, 1997
filing date -
Sep 13, 1996
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A novel field emitter material, field emission electron source, and commercially feasible fabrication method is described. The inventive field emission electron source produces reliable electron currents of up to 400 mA/cm.sup.2 at 200 volts. The emitter is robust and the current it produces is not sensitive to variability of vacuum or the distance between the emitter tip and the cathode. The novel emitter has a sharp turn-on near 100 volts.
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