DIRECT MEASUREMENT OF VELOCITY DISTRIBUTION FUNCTIONS.

Abstract

A method for measuring velocity distribution functions in rarefied gas flows was investigated. The technique is a direct determination, accurate to within one percent, which does not significantly disturb the flow under investigation. It is shown that accurate measurements can be made of the Doppler profile of emission lines excited by an electron beam. The method depends upon the tendency of high energy electrons to transfer relatively little momentum to the nuclei when they excite the electronic levels of gas molecules. The technique presented could be used in the study of normal shock waves and other investigations in rarefied gas dynamics research. (Author)

Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1964
Accession Number
AD0604252

Entities

People

  • E. P. Muntz

Organizations

  • General Electric

Tags

DTIC Thesaurus Topics

  • Distribution Functions
  • Electron Beams
  • Electrons
  • Flow
  • Gas Dynamics
  • Gas Flow
  • Gases
  • High Energy
  • Measurement
  • Rarefied Gas Dynamics
  • Rarefied Gases
  • Shock Waves

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Solar Physics
  • Systems Analysis and Design

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers
  • Microelectronics