TY - JOUR
AU - Pouvesle, J-M
AB - An experimental study of atmospheric-pressure rare gas plasma propagation in a high-aspect-ratio capillary is reported. The plasma is generated with a plasma gun device based on a dielectric barrier discharge (DBD) reactor powered by either nanosecond or microsecond rise-time high-voltage pulses at single-shot to multi-kHz frequencies. The influence of the voltage waveform, pulse polarity, pulse repetition rate and capillary material have been studied using nanosecond intensified charge-coupled device imaging and plasma-front velocity measurements. The evolution of the plasma appearance during its propagation and the study of the role of the different experimental parameters lead us to suggest a new denomination of pulsed atmospheric-pressure plasma streams to describe all the plasma features, including the previously so-called plasma bullet. The unique properties of such non-thermal plasma launching in capillaries, far from the primary DBD plasma, are associated with a fast ionization wave travelling with velocity in the 107–108 cm s−1 range. Voltage pulse tailoring is shown to allow for a significant improvement of such plasma delivery. Thus, the plasma gun device affords unique opportunities in biomedical endoscopic applications.
TI - Characterization of pulsed atmospheric-pressure plasma streams (PAPS) generated by a plasma gun
JO - Plasma Sources Science and Technology
DO - 10.1088/0963-0252/21/3/034017
DA - 2012-06-01
UR - https://www.deepdyve.com/lp/iop-publishing/characterization-of-pulsed-atmospheric-pressure-plasma-streams-paps-ur9M7Ba8eb
SP - 034017
VL - 21
IS - 3
DP - DeepDyve
ER -