Publication detail

Determination of the Nitrogen Atom Wall Recombination Probability in Late Afterglow

MAZÁNKOVÁ, V. TRUNEC, D. KRČMA, F.

Original Title

Determination of the Nitrogen Atom Wall Recombination Probability in Late Afterglow

English Title

Determination of the Nitrogen Atom Wall Recombination Probability in Late Afterglow

Type

conference paper

Language

en

Original Abstract

The reaction kinetics in nitrogen flowing afterglow was studied by optical emission spectroscopy. The DC flowing post-discharge in pure nitrogen was created in a quartz tube at the total gas pressure of 1000 Pa and discharge power of 130 W. The optical emission spectra were measured along the flow tube. Three nitrogen spectral systems - the first positive, the second positive, and the first negative were identified. It was found that N atoms are the most important particles in this late nitrogen afterglow, their volume recombination starts a chain of reactions which produce exited states of molecular nitrogen. In order to explain the decrease of N atom concentration, it was also necessary to include the surface recombination of N atoms to the model. The surface recombination was considered as a first order reaction and wall recombination probability γ = (2.16 ± 0.07) × 10-6 was determined from the experimental data.

English abstract

The reaction kinetics in nitrogen flowing afterglow was studied by optical emission spectroscopy. The DC flowing post-discharge in pure nitrogen was created in a quartz tube at the total gas pressure of 1000 Pa and discharge power of 130 W. The optical emission spectra were measured along the flow tube. Three nitrogen spectral systems - the first positive, the second positive, and the first negative were identified. It was found that N atoms are the most important particles in this late nitrogen afterglow, their volume recombination starts a chain of reactions which produce exited states of molecular nitrogen. In order to explain the decrease of N atom concentration, it was also necessary to include the surface recombination of N atoms to the model. The surface recombination was considered as a first order reaction and wall recombination probability γ = (2.16 ± 0.07) × 10-6 was determined from the experimental data.

Keywords

OES, nitrogen afterglow, recombination probability

RIV year

2015

Released

17.01.2015

Publisher

Comenius University

Location

Bratislava

ISBN

978-80-8147-027-1

Book

20th Symposium on Application of Plasma Processes & COST TD1208 Workshop on Application of Gaseous Plasma with Liquids – Book of Contributed Papers

Edition number

1

Pages from

200

Pages to

203

Pages count

4

BibTex


@inproceedings{BUT116118,
  author="Věra {Mazánková} and David {Trunec} and František {Krčma}",
  title="Determination of the Nitrogen Atom Wall Recombination Probability in Late Afterglow",
  annote="The reaction kinetics in nitrogen flowing afterglow was studied by optical emission spectroscopy. The DC flowing post-discharge in pure nitrogen was created in a quartz tube at the total gas pressure of 1000 Pa and discharge power of 130 W. The optical emission spectra were measured along the flow tube. Three nitrogen spectral systems - the first positive, the second positive, and the first negative were identified. It was found that N atoms are the most important particles in this late nitrogen afterglow, their volume recombination starts a chain of reactions which produce exited states of molecular nitrogen. In order to explain the decrease of N atom concentration, it was also necessary to include the surface recombination of N atoms to the model. The surface recombination was considered as a first order reaction and wall recombination probability γ = (2.16 ± 0.07) × 10-6 was determined from the experimental data.",
  address="Comenius University",
  booktitle="20th Symposium on Application of Plasma Processes & COST TD1208 Workshop on Application of Gaseous Plasma with Liquids – Book of Contributed Papers",
  chapter="116118",
  howpublished="electronic, physical medium",
  institution="Comenius University",
  year="2015",
  month="january",
  pages="200--203",
  publisher="Comenius University",
  type="conference paper"
}