[Table of Contents]

Plasma and Fusion Research

Volume 7, 2401075 (2012)

Regular Articles

Optical Emission and Mass Spectra Observations during Hydrogen Combustion in Atmospheric Pressure Microwave Plasma
Naomichi EZUMI, Kazuhiko AKAHANE, Keiji SAWADA1), Yasunori TANAKA2), Masahiro TANAKA3), Tatsuhiko UDA3) and Kiyohiko NISHIMURA3)
Nagano National College of Technology, Nagano 381-8550, Japan
Shinshu University, Nagano 380-8553, Japan
Kanazawa University, Kanazawa, Ishikawa 920-1192, Japan
National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
(Received 12 December 2011 / Accepted 11 April 2012 / Published 26 July 2012)


We experimentally investigated hydrogen combustion by atmospheric pressure plasma generated by a 2.45 GHz microwave discharge. Small amounts of hydrogen and oxygen were mixed in the operational argon gas during discharge. To clarify the details of combustion, optical emission was measured. The constituents of combustion-processed gases were observed by a quadruple mass spectrometer. The degree of hydrogen oxidation, the so-called conversion rate, increased with input microwave power. The maximum hydrogen conversion rate was greater than 80% under these experimental conditions. During discharge, an optical emission peak due to OH radicals was observed.


atmospheric pressure plasma, hydrogen combustion, optical emission spectroscopy, mass spectroscopy, tritium

DOI: 10.1585/pfr.7.2401075


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This paper may be cited as follows:

Naomichi EZUMI, Kazuhiko AKAHANE, Keiji SAWADA, Yasunori TANAKA, Masahiro TANAKA, Tatsuhiko UDA and Kiyohiko NISHIMURA, Plasma Fusion Res. 7, 2401075 (2012).