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Indexed by:期刊论文

Date of Publication:2014-07-01

Journal:PHYSICS OF PLASMAS

Included Journals:SCIE、EI

Volume:21

Issue:7

ISSN No.:1070-664X

Abstract:The atmospheric-pressure microwave N-2-H-2 plasma torch is generated and diagnosed by optical emission spectroscopy. It is found that a large amount of N atoms and NH radicals are generated in the plasma torch and the emission intensity of N-2(+) first negative band is the strongest over the spectra. The mixture of hydrogen in nitrogen plasma torch causes the morphology of the plasma discharge to change with appearance that the afterglow shrinks greatly and the emission intensity of N-2(+) first negative band decreases with more hydrogen mixed into nitrogen plasma. In atmospheric-pressure microwave-induced plasma torch, the hydrogen imposes a great influence on the characteristics of nitrogen plasma through the quenching effect of the hydrogen on the metastable state of N-2. (C) 2014 AIP Publishing LLC.