FEASIBILITY OF SLIP VELOCITY MEASUREMENT USING DOPPLER TECHNIQUE IN ARGON.

Abstract

The feasibility of measuring slip velocities by observing the Doppler shift in electron beam excited radiation is investigated. The expected Doppler shift in the 4277 A line of argon gas is 0.00276 A. Line broadening effects are dominated by Doppler broadening, which at flow conditions near the leading edge, results in a half-intensity width of 0.00146 A. Using a Fabry-Perot interferometer, the line shift and Doppler profiles are readily resolved near the leading edge. A few suggestions are made for increasing the signal level, including crossing the electron beam with an argon ion laser beam. (Author)

Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1968
Accession Number
AD0689567

Entities

People

  • Paul B. Scott
  • Timothy Norman Sloat

Organizations

  • University of Southern California

Tags

DTIC Thesaurus Topics

  • Argon Lasers
  • Corpuscular Radiation
  • Doppler Effect
  • Electromagnetic Radiation
  • Electron Beams
  • Electrons
  • Fabry Perot Interferometers
  • Interferometers
  • Ion Lasers
  • Laser Beams
  • Lasers
  • Leading Edges
  • Measurement
  • Radiation

Fields of Study

  • Physics

Readers

  • Optical Physics and Photonics.
  • Plasma Physics.
  • Spectroscopy.

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers
  • Microelectronics
  • Microelectronics - Microelectromechanical Systems