Journal
JOURNAL OF PHYSICS D-APPLIED PHYSICS
Volume 43, Issue 25, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/0022-3727/43/25/255201
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Funding
- RFBR [09-02001359-a]
- AFOSR
- NEQLab Research Company
- Directorate For Engineering
- Div Of Chem, Bioeng, Env, & Transp Sys [0755632] Funding Source: National Science Foundation
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Observations of a shock wave propagating through a decaying plasma in the afterglow of an impulse high-voltage nanosecond discharge and of a surface dielectric barrier discharge in the nanosecond range were analysed to determine the electron power transferred into heat in air plasmas in high electric fields. It was shown that approximately half of the discharge power can go to heat for a short (similar to 1 mu s at atmospheric pressure) period of time when reduced electric fields are present at approximately 10(3) Td. A kinetic model was developed to describe the processes that contribute towards the fast transfer of electron energy into thermal energy under the conditions considered. This model takes into account previously suggested mechanisms to describe observations of fast heating in moderate (similar to 10(2) Td) reduced electric fields and also considers the processes that become important in the presence of high electric fields. Calculations based on the developed model agree qualitatively with analyses of high-voltage nanosecond discharge observations.
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