Journal
APPLIED PHYSICS LETTERS
Volume 91, Issue 22, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2817965
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In this letter, an experimental study is presented to characterize a room-temperature plasma jet in atmospheric argon generated with submicrosecond voltage pulses at 4 kHz. Distinct from sinusoidally produced argon discharges that are prone to thermal runaway instabilities, the pulsed atmospheric argon plasma jet is stable and cold with an electron density 3.9 times greater than that in a comparable sinusoidal jet. Its optical emission is also much stronger. Electrical measurement suggests that the discharge event is preceded with a prebreakdown phase and its plasma stability is facilitated by the short voltage pulses. (C) 2007 American Institute of Physics.
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