Modeling and Electrostatic Focusing for a Field Emission Electron Source

Abstract

This paper presents theory and analysis of single-tip field emission and electron beam propagation in the electrostatic focusing fields. It is shown that two gate apertures with a focusing anode allow transport of narrow electron beams over long distances without need for a confining magnetic field. Physical mechanisms of the beam formation, transport, field emission energy distributions, the effects of the emission properties, and parametric studies are discussed, emission current formula is derived, and new concept and model of the bandgap-spread multilevel field emission is given.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 2013
Accession Number
ADA605619

Entities

People

  • Baruch Levush
  • David Abe
  • John Pasour
  • John Petillo
  • Khanh T. Nguyen
  • Vadim Jabotinski

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Current Density
  • Electric Fields
  • Electron Beams
  • Electron Emission
  • Electron Energy
  • Electrons
  • Emission
  • Emitters
  • Energy Bands
  • Exclusion Principle
  • Field Emission
  • Free Electrons
  • Geometry
  • Magnetic Fields
  • Pulsed Power
  • Quantum Tunneling
  • Work Functions

Fields of Study

  • Physics

Readers

  • Plasma Physics.
  • Pulsed Power and Plasma Physics.

Technology Areas

  • Directed Energy
  • Microelectronics