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Development and Characterisation of a Microwave‐heated Atmospheric Plasma Torch
Author(s) -
Leins Martina,
Alberts Lukas,
Kaiser Mathias,
Walker Matthias,
Schulz Andreas,
Schumacher Uwe,
Stroth Ulrich
Publication year - 2009
Publication title -
plasma processes and polymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 74
eISSN - 1612-8869
pISSN - 1612-8850
DOI - 10.1002/ppap.200930604
Subject(s) - microwave , plasma , analytical chemistry (journal) , inductively coupled plasma , atmospheric pressure , electric field , torch , materials science , fourier transform infrared spectroscopy , atmospheric pressure plasma , plasma torch , spectroscopy , spectrometer , microplasma , decomposition , plasma parameters , plasma diagnostics , inductively coupled plasma atomic emission spectroscopy , ion source , chemistry , optics , environmental chemistry , physics , quantum mechanics , welding , meteorology , metallurgy , organic chemistry
Among other applications, microwave plasma sources at atmospheric pressure are used for the decomposition of halogenated volatile organic compounds (VOC). The presented microwave plasma torch is based on an axially symmetric resonator. Simulations of the electric field distribution, Eigen frequency analyses and measurements of the resonant frequency resulted in an improved design. Microwaves of 2.45 GHz are fed into this cavity resulting in a sufficiently high electric field for ignition and maintaining stable plasma. The characterisation of the plasma is made with optical emission spectroscopy. The decomposition of VOC was analysed with FTIR‐spectroscopy, a mass spectrometer and an FID.