Electron Sources for Future Image Tubes.

Abstract

Several electron sources were investigated for use in far infrared image tubes in an effort to find or develop sources which had sharp cutoffs in their electron energy distribution curves (EDC's). An angular electron energy analyzer system was fabricated and used to evaluate not only EDC's but also their dependence on emission angle. Primary experimental attention was directed at two electrostatic filtering techniques - 127 deg. cylindrical and hemispherical - and three emitters - miniature field-emitter tips, tin oxide thin films, and negative electron affinity (NEA) gallium phosphide photoemitters. None of these were developed sufficiently for use in image tube applications. However, the field-emitter tips and NEA emitter look promising for improving the contrast enhancement in future image tubes. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1976
Accession Number
ADA032049

Entities

People

  • Terry L. Jones

Organizations

  • United States Army Communications-Electronics Command

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Electron Emission
  • Electron Energy
  • Electrons
  • Emission
  • Emitters
  • Energy
  • Energy Bands
  • Field Emission
  • Films
  • Filters
  • Image Tubes
  • Images
  • Infrared Image Tubes
  • Infrared Images
  • Photoexcitation
  • Thin Films
  • Unmanned Maritime Systems

Fields of Study

  • Physics

Readers

  • Plasma Physics.
  • Semiconductor Device Technology
  • Software Engineering.

Technology Areas

  • Microelectronics