Field-Emission Arrays - A Potentially Bright Source

Abstract

Field-Emission arrays are potentially a compact and bright electron source. Unlike a laser photocathode, external laser systems are not required. It is possible to have spatial control of the cathode emission. Temporal modulation up to 10 GHz may be possible. We estimate the emittance and brightness based on a reasonable FEA design. Since the FEAs are at an early stage of development for accelerator applications, many technical problems need to be addressed before they can become useful cathodes. This laboratory developing the field-effect controlled (FEC) vacuum field-emission cathode, which is designed to improve the performance of field-emission arrays and to enable the success of envisioned applications of these vacuum field-emitters.

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Document Details

Document Type
Technical Report
Publication Date
Feb 18, 1992
Accession Number
ADA246561

Entities

People

  • Antonio Ting
  • Cha-Mei Tang
  • Thomas Swyden

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Brightness
  • Cathodes
  • Current Density
  • Electric Fields
  • Electrodes
  • Electrons
  • Emission
  • Emitters
  • Field Emission
  • Free Electron Lasers
  • Free Electrons
  • Military Research
  • Photocathodes
  • Space Charge
  • Standards
  • Voltage
  • Work Functions

Fields of Study

  • Physics

Readers

  • Electronics Engineering
  • Pulsed Power and Plasma Physics.

Technology Areas

  • Directed Energy
  • Microelectronics