Production of NO, NO2 and N2O in Air by Breakdown with High Power Microwaves:A Preliminary Report

Production of NO, NO2 and N2O in Air by Breakdown with High Power Microwaves:A Preliminary Report

Production of trace nitrogen oxide species in air discharge plasmas was observed with a quadrupole mass spectrometer attached to a specially- designed, S-band waveguide. At pressures between 25 and 200 Torr in the waveguide, nitric oxide (NO) was the most concentrated trace species observed, reachin...

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Bibliographische Detailangaben
Hauptverfasser: Hunton, Donald E, Ballenthin, John O, Trzcinski, Edmund, Borghetti, John F, Federico, Gennaro S
Format: Report
Sprache:eng
Schlagworte:
AIR
CALIBRATION
CHEMISTRY
DATA ACQUISITION
DATA REDUCTION
HIGH POWER
Inorganic Chemistry
LOW PRESSURE
MASS SPECTROMETERS
MASS SPECTROSCOPY
MICROWAVES
NEUTRAL
NITROGEN DIOXIDE
NITROGEN OXIDES
NITROUS OXIDE
PE61102F
PLASMAS(PHYSICS)
PRODUCTION
QUADRUPOLE MOMENT
S BAND
WAVEGUIDES
WUGL2310G319
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Beschreibung
Zusammenfassung:Production of trace nitrogen oxide species in air discharge plasmas was observed with a quadrupole mass spectrometer attached to a specially- designed, S-band waveguide. At pressures between 25 and 200 Torr in the waveguide, nitric oxide (NO) was the most concentrated trace species observed, reaching concentrations of greater than 2% at 200 Torr. Nitrogen dioxide (NO2) was also observed, but only after the discharge had been turned off. NO2 concentrations were slightly lower than NO. At pressures between 9 and 0.3 Torr, the only species observed was nitrous oxide (N2O), which reached a concentration of approximately 2% at the lower pressure. The experimental apparatus, data collection procedures, calibration procedures, data reduction, and results are described in detail. (JES)