Performance Evaluation and Reaction Kinetics of a Pulsed HF Laser

Abstract

Variation of performance of a laser-initiated HF laser with variation in reagent concentrations, reagent-diluent concentration ratio, and initial dissociation level is described. The HF laser intensity transients exhibit characteristic temporal structure representative of free-running chain reactions and collisional transfer processes in reacting H2 - F2 mixtures. Explicit exposure of underlying mechanisms is achieved by fast dissociation of F2 via second harmonic radiation derived from a Q-switched ruby laser pulse, and by simultaneous time-resolved spectral measurements of laser emission on a number of vibration-rotation transitions. Continued laser emission over many chain- reaction steps, even for relatively low dissociation levels, supports the position that pulsed chemical lasers are attractive candidates for high power applications.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1973
Accession Number
AD0767230

Entities

People

  • D. B. Nichols
  • J. D. Mcclure
  • K. H. Wrolstad

Organizations

  • Boeing

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Chain Reactions
  • Chemical Lasers
  • Chemical Reaction Properties
  • Chemical Reactions
  • Dissociation
  • Hydrogen Fluoride Lasers
  • Laser Applications
  • Laser Beams
  • Laser Pulses
  • Laser Resonators
  • Lasers
  • Light (Electromagnetic Radiation)
  • Measurement
  • Radiation
  • Ruby Lasers
  • Spectroscopy

Fields of Study

  • Engineering
  • Physics

Readers

  • Electronics Engineering
  • Molecular Photonics/Laser Physics
  • Systems Analysis and Design

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers