Study of argon flowing afterglow with nitrogen injection

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Authors

MAZÁNKOVÁ Věra TRUNEC David KRČMA František

Year of publication 2013
Type Article in Periodical
Magazine / Source Journal of Chemical Physics
MU Faculty or unit

Faculty of Science

Citation
Doi http://dx.doi.org/10.1063/1.4826650
Field Plasma physics
Keywords argon post-discharge; nitrogen; resonant energy transfer
Description In this work the reaction kinetics in argon flowing afterglow with nitrogen addition was studied by optical emission spectroscopy. Kinetic model showed that C~$^{3}\Pi_{u}$ state of molecular nitrogen, which is the upper state of SPS emission, is produced by excitation transfer from argon metastables to nitrogen molecules. However, the argon metastables are also produced at Ar$_2^+$ ion recombination with electrons and this limits the decay of argon metastable concentration and it results in very slow decay of second positive system intensity.
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