Fourier Transform Infrared Spectroscopy of Nitric Oxide during Exposure to Vacuum Ultraviolet Radiation.

Abstract

The FTIR spectrum of chemically pure (CP) NO was obtained while the gas was being irradiated by radiation at 121.5 nm. A novel cell design allows the ultraviolet radiation and the infrared probe beam to be colinear. The exposure time of the gas to the UV radiation ranged from 0 to 100 minutes. Spectra were collected at evenly spaced time intervals during irradiation by the UV radiation. The composition of the gas changed as a function of irradiation time. Experimental results were compared with the calculated change in the composition of the gas by solving a set of simultaneous differential equations based on a kinetic model, giving good agreement. It is shown that the cell may also be used as an actinometer, and may be used as a check on the applicability of some rate equations to reacting systems.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1991
Accession Number
ADA233508

Entities

People

  • Kevin L. McNesby
  • Robert A. Fifer

Organizations

  • Ballistic Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Materials and Manufacturing Processes
  • Weapons Technologies

DTIC Thesaurus Topics

  • Absorption Coefficients
  • Chemical Engineering
  • Chemical Reaction Properties
  • Chemistry
  • Dissociation
  • Infrared Radiation
  • Infrared Spectroscopy
  • Ionization
  • Jet Propulsion
  • Mechanical Engineering
  • Military Research
  • Nitrogen Oxides
  • Quantum Yields
  • Radiation
  • Spectra
  • Spectroscopy
  • Ultraviolet Radiation

Fields of Study

  • Physics

Readers

  • Electrochemical Engineering/ Fuel Cell Technologies
  • Mathematics or Statistics
  • Spectroscopy.

Technology Areas

  • Space
  • Space - Hall-Effect Thruster