O atoms density measurements in a capillary nanosecond discharge: measurement techniques and kinetic modeling
1 : Laboratoire de Physique des Plasmas
(LPP)
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Website
Polytechnique - X, Université Pierre et Marie Curie (UPMC) - Paris VI, CNRS : UMR7648, Université Paris XI - Paris Sud, Université Pierre et Marie Curie [UPMC] - Paris VI
2 : Skobeltsyn Institute for Nuclear Physics - Lomonosov Moscow State University
(SINP MSU)
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Website
* : Corresponding author
Lomonosov Moscow State University Skobeltsyn Institute of Nuclear Physics (MSU SINP), 1(2), Leninskie gory, GSP-1, Moscow 119991, Russian Federation -
Russia
A nanosecond repetitively pulsed discharge in a quartz capillary filled with flowing synthetic air was investigated as a benchmark to address the mechanism of fast gas heating for conditions of up to complete dissociation of O2 and heating of a few thousand K occurring during the near afterglow phase. Gas temperature, energy deposition, and O atom concentrations were measured with respect to time. O atom results are compared to the output from a detailed 0D kinetic model describing the excited species chemistry. The high oxygen dissociation degree enables investigation of the key role played by O atoms in fast gas heating of nanosecond discharge plasmas at high specific energy loading.
