The Field Emitter: Fabrication, Electron Microscopy, and Electric Field Calculations
作者： W. P. Dyke , J. K. Trolan , W. W. Dolan , George Barnes
DOI: 10.1063/1.1721330
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摘要: When a specially designed field cathode assembly was inserted in commercial electron microscope which appropriately modified for the purpose, geometry of needle shaped emitter obtained from micrographs several its profiles at various stages fabrication and experimental use. An investigation methods revealed that smooth, simple, relatively stable tungsten resulted refinement Benjamin Jenkins combines electrolytic etch smoothing action surface migration. The electric any point on an calculated when precisely fitted with one equipotential family surrounding charged, isolated sphere‐on‐orthogonal‐cone. A theoretical distribution current density typical derived wave‐mechanical emission theory. From this result a...
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