Chemical Additives and Diagnostics for High Temperature Air Plasmas.

Abstract

The behavior of various low boiling-point, electrophilic chemical additives in a nitrogen-oxygen plasma was studied by using a K-band microwave horn probe and an S-band stripline probe. Test results show that Freon 113, Freon C-51-12, trichloroethylene, and carbon tetrachloride, which previously have been found to be excellent additives for the enhancement of microwave transmission through an argon plasma, are also very effective in removing free electrons and improving microwave transmission through the nitrogen-oxygen plasma. The principles of operation of the K-band microwave horn system and the S-band stripline diagnostic system are briefly discussed. Flight data obtained from a two-coil conductivity probe constructed under the previous contract for the measurement of plasma electrical conductivity of a re-entry nose cone were analyzed. (Author)

Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1971
Accession Number
AD0748469

Entities

People

  • Kuo Wei Chang
  • Sol Aisenberg

Tags

DTIC Thesaurus Topics

  • Additives (Chemicals)
  • Boiling Point
  • Carbon Tetrachloride
  • Conductivity
  • Electrical Conductivity
  • Electrons
  • Free Electrons
  • High Temperature
  • K Band
  • Microwave Transmission
  • Microwaves
  • Nitrogen
  • Nose Cones

Readers

  • Fluid Dynamics.
  • Microwave Engineering.
  • Pulsed Power and Plasma Physics.

Technology Areas

  • Microelectronics