Publication detail

Influence of Oxygen Traces on Pure Nitrogen Post-Discharge Kinetics

SOURAL, I. KRČMA, F. MAZÁNKOVÁ, V.

Original Title

Influence of Oxygen Traces on Pure Nitrogen Post-Discharge Kinetics

English Title

Influence of Oxygen Traces on Pure Nitrogen Post-Discharge Kinetics

Type

miscellaneous

Language

en

Original Abstract

The DC flowing post-discharge was used for the experimental study. The active discharge was created in a Pyrex or quartz discharge tubes with a 120 mm electrode distance at current of 200 mA and pressure of 1000 Pa. Temperature inside the decaying plasma at 77 K wall temperature was calculated of about 100 K by using the simulated nitrogen 1st positive 2-0 band spectrum. Nitrogen 1st and 2nd positive and 1st negative systems were recorded in all spectra. The bands of NO-beta system dominantly originating from vibrational level 0 were observed, too. The bands of NO-gamma system dominantly originating also from vibrational level 0 were observed when quartz tube was used. No other molecular or atomic emissions were observed. The presence of oxygen traces significantly increase concentration of nitrogen atoms and NO molecules, concentrations of the other species are quenched proportionally to the oxygen trace concentration. The effect is stronger at lower temperature.

English abstract

The DC flowing post-discharge was used for the experimental study. The active discharge was created in a Pyrex or quartz discharge tubes with a 120 mm electrode distance at current of 200 mA and pressure of 1000 Pa. Temperature inside the decaying plasma at 77 K wall temperature was calculated of about 100 K by using the simulated nitrogen 1st positive 2-0 band spectrum. Nitrogen 1st and 2nd positive and 1st negative systems were recorded in all spectra. The bands of NO-beta system dominantly originating from vibrational level 0 were observed, too. The bands of NO-gamma system dominantly originating also from vibrational level 0 were observed when quartz tube was used. No other molecular or atomic emissions were observed. The presence of oxygen traces significantly increase concentration of nitrogen atoms and NO molecules, concentrations of the other species are quenched proportionally to the oxygen trace concentration. The effect is stronger at lower temperature.

Keywords

nitrogen afterglow, influence of oxygen traces, kinetic model of post-discharge

RIV year

2008

Released

16.06.2008

Location

Karlsruhe

Pages from

396

Pages to

396

Pages count

1

BibTex


@misc{BUT49512,
  author="Ivo {Soural} and František {Krčma} and Věra {Mazánková}",
  title="Influence of Oxygen Traces on Pure Nitrogen Post-Discharge Kinetics",
  annote="The DC flowing post-discharge was used for the experimental study. The active discharge was created in a Pyrex or quartz discharge tubes with a 120 mm electrode distance at current of 200 mA and pressure of 1000 Pa. Temperature inside the decaying plasma at 77 K wall temperature was calculated of about 100 K by using the simulated nitrogen 1st positive 2-0 band spectrum. Nitrogen 1st and 2nd positive and 1st negative systems were recorded in all spectra. The bands of NO-beta system dominantly originating from vibrational level 0 were observed, too. The bands of NO-gamma system dominantly originating also from vibrational level 0 were observed when quartz tube was used. No other molecular or atomic emissions were observed. The presence of oxygen traces significantly increase concentration of nitrogen atoms and NO molecules, concentrations of the other species are quenched proportionally to the oxygen trace concentration. The effect is stronger at lower temperature.",
  chapter="49512",
  journal="IEEE CONFERENCE RECORD - ABSTRACTS",
  number="ICOPS",
  year="2008",
  month="june",
  pages="396--396",
  type="miscellaneous"
}