Laser Induced Fluorescence of Ground State Hydrogen Atoms at Nozzle Exit of an Arcjet Thruster

Abstract

We report the first observation of a two-photon laser-induced fluorescence (LIF) technique in an arcjet plume. Ground state hydrogen atoms are detected with high spatial resolution near the thruster nozzle exit. Number density, axial and radial velocity, and translational temperature distributions are obtained in the expansion plume of a 1 kW arcjet operating on hydrogen propellant. Comparison of the ground state properties with previously measured excited state hydrogen data and recent computational data is discussed.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1995
Accession Number
ADA436728

Entities

People

  • Ingrid J. Wysong
  • Jeffrey A. Pobst
  • Ronald A. Spores

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes
  • Space

DTIC Thesaurus Topics

  • Arc Jet Engines
  • Colorado
  • Detection
  • Dye Lasers
  • Electric Propulsion
  • Fluorescence
  • Ground State
  • Laser Beams
  • Laser Induced Fluorescence
  • Laser Pulses
  • Lasers
  • Liquid Dye Lasers
  • Measurement
  • New York
  • Propulsion Systems
  • Thrusters
  • United States

Fields of Study

  • Physics

Readers

  • Aerospace Propulsion Engineering.
  • Molecular Photonics/Laser Physics

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers
  • Space
  • Space - Hall-Effect Thruster