RESEARCH ON LOW NOISE CATHODE DEVELOPMENT.

Abstract

A vehicle for measuring the effective noise temperature of cathodes was completed and noise measurements of conventional thermionic cathodes are in progress. Calculations as to the effect of the narrow velocity spread and low beam currents from potential low noise cathodes on gun parameters were made. Guns must be somewhat longer than are currently in use. Some experiments were made using freezing drying as a method for fabricating uniformly dispersed thermionic cathode surfaces. Experiments are being initiated using low temperature photoelectric cathodes as low noise sources. A theoretical treatment of velocity and density distribution in a simple model of a low noise gun is being carried out with the help of a computer. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jan 31, 1964
Accession Number
AD0434075

Entities

People

  • D. Bobroff
  • S. R. Steele
  • Shifeng Mao
  • W. Getty

Organizations

  • RTX

Tags

DTIC Thesaurus Topics

  • Computers
  • Critical Temperature
  • Freezing
  • Glass Transition Temperature
  • Low Noise
  • Low Temperature
  • Measurement
  • Noise
  • Transition Temperature

Fields of Study

  • Physics

Readers

  • Battery Technology and Engineering
  • Image Processing and Computer Vision.
  • Thermal Physics or Thermal Science.