Vibrational Relaxation and Electronic Quenching-Rate Coefficients for BiF (A0+,v1) by SF6

Abstract

The kinetic data base is extended for the A-state of BiF to include SF6 as a collision partner. By applying a four-level finite difference fitting routine to time-resolved fluorescence traces from v' = 0-3, one obtains rate coefficients for electronic quenching, as well as for vibrational relaxation within the A-state manifold. As was the case for our previous results with He and Ar, electronic quenching is slow in comparison to radiative decay. Vibrational relaxation does not show a simple v' dependence, but rather, for the levels examined, increases markedly for higher v'. Our results confirm the suitability of SF6 as a bulk diluent in the proposed NF/BiF chemical laser system.

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Document Details

Document Type
Technical Report
Publication Date
Aug 22, 1988
Accession Number
ADA199205

Entities

People

  • H. Helvajian
  • J. B. Koffend
  • J. S. Holloway

Organizations

  • The Aerospace Corporation

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Air Force
  • Air Force Facilities
  • Availability
  • Chemical Reactions
  • Classification
  • Coefficients
  • Dye Lasers
  • Flow
  • Fluorescence
  • Laser Beams
  • Laser Induced Fluorescence
  • Lasers
  • Quenching
  • Security
  • Stainless Steel
  • Steel
  • Vibrational Relaxation

Fields of Study

  • Physics

Readers

  • Combustion science or combustion engineering.
  • Computational Modeling and Simulation
  • Military Engineering.

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers
  • Microelectronics