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23 Nov 2009

Volume 95, Issue 21, Articles (21xxxx)

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Appl. Phys. Lett. 95, 213501 (2009); http://dx.doi.org/10.1063/1.3265958 (3 pages)

S. Cibella, M. Ortolani, R. Leoni, G. Torrioli, L. Mahler, Ji-Hua Xu, A. Tredicucci, H. E. Beere, and D. A. Ritchie
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Atmospheric pressure argon plasma jet using a cylindrical piezoelectric transformer

Hyun Kim, Albrecht Brockhaus, and Jürgen Engemann

Appl. Phys. Lett. 95, 211501 (2009); http://dx.doi.org/10.1063/1.3267142 (3 pages) | Cited 11 times

Online Publication Date: 24 November 2009

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A low-voltage atmospheric pressure nonthermal argon plasma jet using a circular piezoelectric transducer is proposed. An Ar plasma flame is generated at an input voltage of 87 V. The consumed power is 2 W. The electrical and optical properties of the jet are analyzed. In particular, the transient Ar discharge ignition and evolution including the so-called plasma bullet phenomenon is examined temporally resolved with the aid of a fast camera. It is found that four discharge phases can be identified, designated as ignition, extension, self-propagation, and attenuation. The plasma bullet is launched while the electric field in the discharge space is decreasing. The average bullet velocity is 23 km/s.
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52.75.-d Plasma devices
52.80.-s Electric discharges
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