DURIP 97 Thermionic Cathode and Ceramic Insulator for Ultraclean High Power Microwave Sources

Abstract

A Nd:YAG laser with a 600 W output power was procured and installed. Thermal defocusing in the laser's Nd:YAG rod suggested that the beam quality and power density were highest at about 400 W, rather than the full 600 W power level. The laser heated cathode system was installed on the MELBA diode. The ceramic insulator stack has been designed, fabricated and vacuum tested. It employs 12 ceramic rings alternating with Kovar rings which are vacuum brazed together.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1999
Accession Number
ADA364770

Entities

People

  • Ronald M. Gilgenbach

Organizations

  • University of Michigan

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Current Density
  • Dielectrics
  • Electric Fields
  • Electron Beams
  • Emission
  • Field Emission
  • High Power Microwaves
  • Laser Beams
  • Lasers
  • Materials
  • Measurement
  • Microwaves
  • Optical Pyrometers
  • Pyrometers
  • Stainless Steel
  • Students

Fields of Study

  • Physics

Readers

  • Electronics Engineering
  • Pulsed Power and Plasma Physics.

Technology Areas

  • Directed Energy
  • Microelectronics