Division of Environmental Physics - User: igor
Faculty of Mathematics, Physics and Informatics, Comenius University Bratislava

Two-photon absorption laser induced fluorescence study of repetitively pulsed nanosecond discharges in atmospheric pressure air

Stancu G.D., Janda M., Kaddouri F., Pai D., Rolon J.C., Laux C.O.
39th Plasmadynamics and Lasers Conference, Seattle, WA, June 23-26, AIAA 2008-3882 (2008)

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Abstract:

Nanosecond repetitive discharges generated by high voltage pulses
in a pin-to-pin electrode configuration in atmospheric pressure air
are currently used to stabilize lean flame, for the purpose of reducing
pollutant concentrations. The goal of this work was to gain
an understanding of the plasma-flame stabilization mechanism.
Two-photon absorption laser induced fluorescence was employed here
for measurement of atomic oxygen that is considered to be the key
species for stabilization mechanism. Time resolved measurements
of the atomic oxygen number density during plasma formation and
decay were performed. The hypothesis that the plasma creates reactive
O via a two-step mechanism was partially demonstrated.

Citations:

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