Field emission at 10Vcm−1 with surface emission cathodes on negative-electron-affinity insulators

Autor:	K. E. Krohn, M. F. Marchant, S. Deneault, Theodore M. Lyszczarz, D. L. Cooke, Michael W. Geis
Rok vydání:	2005
Předmět:	Field electron emission Materials science Physics and Astronomy (miscellaneous) law Electric field Electron multiplier Electron affinity Insulator (electricity) Biasing Atomic physics Cathode Anode law.invention
Zdroj:	Applied Physics Letters. 87:192115
ISSN:	1077-3118 0003-6951
DOI:	10.1063/1.2130382
Popis:	Surface emission cathodes reported here consist of two electrodes separated by ∼10μm on a negative-electron-affinity glass, Cs2Si4O9. The electrodes consist of a W film suspended over the insulator by a gap of 0–70 nm. When electron emission is initiated with a bias of 0–300 V, between the electrodes, the cathodes continue to emit after the bias is removed and for anode voltages as low as 20 V, electric fields
Databáze:	OpenAIRE
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