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Applied field required to maintain a constant emission current for field emission devices with an Al anode at different chamber pressures. The flat section at for the device at was due to voltage limiting on the current feedback circuit and was corrected at .
Applied field required to maintain a constant emission current for the simultaneous testing of field emission devices with anode coatings of (a) unfired phosphor, (b) pristine ITO and graphite paint, (c) Al on phosphor and sputtered C on Al on phosphor, and (d) fired phosphor and sputtered C.
Evolution of applied field for a constant current field emission device exposed to Ar, , , , and .
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