Publication detail

Optical Emission Spectroscopy of Atmospheric Pressure Discharges in Nitrogen-Methane Gas Mixtures

KRČMA, F. KLOHNOVÁ, K. POLÁCHOVÁ, L. HORVÁTH, G.

Original Title

Optical Emission Spectroscopy of Atmospheric Pressure Discharges in Nitrogen-Methane Gas Mixtures

English Title

Optical Emission Spectroscopy of Atmospheric Pressure Discharges in Nitrogen-Methane Gas Mixtures

Type

conference paper

Language

en

Original Abstract

The optical emission spectra of abnormal glow and DBD discharges were studied at atmospheric pressure and ambient temperature. The used nitrogen-methane mixtures (0.5-2.5 % of methane) are corresponding to the composition of Saturn's moon Titan atmosphere. Both gases had purity better than 99.999 % and the whole system was evacuated before measurement to suppress oxygen traces. Optical emission spectra were taken in the dependence of applied power and gas mixture composition. Nitrogen, C2 and CN radical spectra as well as atomic lines of hydrogen and carbon were identified in the case of abnormal glow discharge. Only nitrogen second positive spectra were recorded in the case of DBD due to lower transparency of the system as well as due to lower applied power. The rotational and vibrational temperatures were obtained in both discharge configurations for different species.

English abstract

The optical emission spectra of abnormal glow and DBD discharges were studied at atmospheric pressure and ambient temperature. The used nitrogen-methane mixtures (0.5-2.5 % of methane) are corresponding to the composition of Saturn's moon Titan atmosphere. Both gases had purity better than 99.999 % and the whole system was evacuated before measurement to suppress oxygen traces. Optical emission spectra were taken in the dependence of applied power and gas mixture composition. Nitrogen, C2 and CN radical spectra as well as atomic lines of hydrogen and carbon were identified in the case of abnormal glow discharge. Only nitrogen second positive spectra were recorded in the case of DBD due to lower transparency of the system as well as due to lower applied power. The rotational and vibrational temperatures were obtained in both discharge configurations for different species.

Keywords

Optical emission spectroscopy, atmospheric pressure discharge, Titan like atmosphere, nitrogenmethane gas mixture

RIV year

2011

Released

14.01.2011

Location

Bratislava

ISBN

978-80-89186-77-8

Book

Book of Contributed Papers: 18th Symposium on Application of Plasma Processes and Workshop on Plasmas as a Planetary Atmospheres Mimics

Pages from

46

Pages to

50

Pages count

5

BibTex


@inproceedings{BUT36686,
  author="František {Krčma} and Karolína {Klohnová} and Lucie {Töröková} and Gabriel {Horváth}",
  title="Optical Emission Spectroscopy of Atmospheric Pressure Discharges in Nitrogen-Methane Gas Mixtures",
  annote="The optical emission spectra of abnormal glow and DBD discharges were studied at atmospheric pressure and ambient temperature. The used nitrogen-methane mixtures (0.5-2.5 % of methane) are corresponding to the composition of Saturn's moon Titan atmosphere. Both gases had purity better than 99.999 % and the whole system was evacuated before measurement to suppress oxygen traces. Optical emission spectra were taken in the dependence of applied power and gas mixture composition. Nitrogen, C2 and CN radical spectra as well as atomic lines of hydrogen and carbon were identified in the case of abnormal glow discharge. Only nitrogen second positive spectra were recorded in the case of DBD due to lower transparency of the system as well as due to lower applied power. The rotational and vibrational temperatures were obtained in both discharge configurations for different species.",
  booktitle="Book of Contributed Papers: 18th Symposium on Application of Plasma Processes and Workshop on Plasmas as a Planetary Atmospheres Mimics",
  chapter="36686",
  howpublished="electronic, physical medium",
  year="2011",
  month="january",
  pages="46--50",
  type="conference paper"
}