Determination of Absolute Photon Yields in Chemiluminescent Reactions

Abstract

An experimental procedure is presented to measure the absolute photon yield, the percentage probability of emitting a visible photon per reactant molecule consumed, for chemiluminescent reactions under single collision conditions. Using a well-defined metal beam directed into a scattering gas at sub-millitorr pressures, this procedure is applied to the reactions Sm+N2O, Sm+F2, Ba+N2O, and Ba+NO2 to obtain the photon yields in the 350-800 nm range of 0.18%, 5.5%, 1.1% and 0.08% respectively, where the estimated uncertainty is about 50%.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1976
Accession Number
ADA034515

Entities

People

  • Richard Zare

Organizations

  • Columbia University

Tags

Communities of Interest

  • Energy and Power Technologies
  • Sensors

DTIC Thesaurus Topics

  • Calibration
  • Chemical Reactions
  • Gages
  • Graphitic Materials
  • Intensity
  • Ionization Gages
  • Materials
  • Measurement
  • New York
  • Optical Detection
  • Photomultiplier Tubes
  • Physics
  • Pressure Measurement
  • Scattering
  • Spectra
  • Standards
  • Uncertainty

Fields of Study

  • Physics

Readers

  • Combustion science or combustion engineering.
  • Molecular Photonics/Laser Physics
  • Regression Analysis.