Measuring Atmospheric Free Radicals Using Chemical Amplification

Abstract

Atmospheric free radicals play an important role in early all atmospheric cycles. The focus of this research was to continue characterizing the PEroxy Radical measurement by Chemical Amplification (PERCA) method first investigated by Cantrell (1983, 1984), then Buhr (1986). Experiments proved the original model of the PERCA method developed by Cantrell was too simple. New instrument modifications have insured optimum performance for peroxy radical measurement in clean, dry environments. The instrument is currently calibrated under laboratory conditions by observing the decay of HO2 radicals in a formaldehyde photolysis system. The reported chain lengths of 600 are in reasonable agreement with previously reported methods. Theses.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1988
Accession Number
ADA196704

Entities

People

  • Bernard T. Ghim

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Advanced Electronics
  • C4I
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Chain Reactions
  • Chemical Reaction Properties
  • Chemical Reactions
  • Chemical Synthesis
  • Chemistry
  • Detectors
  • Dissociation
  • Environment
  • Free Radicals
  • High Humidity
  • Humidity
  • Hydrocarbons
  • Laser Induced Fluorescence
  • Measurement
  • Nitrogen Oxides
  • Rate Of Formation
  • Spectroscopy

Fields of Study

  • Environmental science

Readers

  • Combustion science or combustion engineering.
  • Naval Engineering and Maritime Security
  • Systems Analysis and Design