2134/5242
Felipe Iza
Felipe
Iza
James L. Walsh
James L.
Walsh
Michael G. Kong
Michael G.
Kong
From submicrosecond-to nanosecond-pulsed atmospheric-pressure plasmas
Loughborough University
2009
Atmospheric pressure
Nanosecond
Pulsed plasma
Simulation
Mechanical Engineering not elsewhere classified
2009-08-28 10:13:45
Journal contribution
https://repository.lboro.ac.uk/articles/journal_contribution/From_submicrosecond-to_nanosecond-pulsed_atmospheric-pressure_plasmas/9560162
We have developed a time-hybrid computational
model to study pulsed atmospheric-pressure discharges and compared
simulation results with experimental data. Experimental
and computational results indicate that increasing the applied
voltage results in faster ignition of the discharge and an increase
in the mean electron energy, opening the door to tunable plasma
chemistry by means of pulse shaping. Above a critical electric field
of ~2 kV/mmfor ~1-mm discharges, pulsed plasmas ignite right
after the application of an externally applied voltage pulse. Despite
the large pd value (30–300 torr · cm) and the high applied electric
field, the discharges are found to be streamer free in a desirable
glowlike mode. The comparison of the time evolution of the mean
electron kinetic energy as a function of the pulse rise time suggests
that a fast rise time is not necessarily the best way of achieving
high mean electron energy.