Program to Research Laser-Driven Thermionic Electron Sources for Free Electron Lasers.

Abstract

This is the Final Report on the research and development of high brightness pulse laser driven thermionic electron sources. Enhanced coupling of electron beam energies to radiative fields in accelerator-driven free-electron lasers requires injector cathodes of higher brightness than is possible with conventional dispenser cathodes or plasma-forming field emitters. Cesiated refractory surfaces and dispenser cathodes which are pulse laser heated may offer such an increase in brightness, by the emission of monoenergetic beams of electrons at high current densities. The studies were designed to investigate the emission characteristics of both of these types of thermionic cathodes.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1988
Accession Number
ADA190473

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Capacitance
  • Cathodes
  • Current Density
  • Diameters
  • Electron Emission
  • Electrons
  • Emission
  • Emitters
  • Free Electron Lasers
  • Free Electrons
  • Glass Lasers
  • Laser Beams
  • Lasers
  • Measurement
  • Photoexcitation
  • Space Charge
  • Thermionic Emission

Fields of Study

  • Physics

Readers

  • Plasma Physics.
  • Pulsed Power and Plasma Physics.

Technology Areas

  • Directed Energy
  • Microelectronics