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Levitated dust particles subjected to plasma jet

Published online by Cambridge University Press:  15 January 2010

C. M. TICOŞ ,
I. JEPU ,
C. P. LUNGU ,
P. CHIRU ,
V. ZAROSCHI  and
A. M. LUNGU
C. M. TICOŞ
Affiliation:
National Institute for Lasers, Plasma and Radiation Physics, 077125 Bucharest, Romania (cata_ticos@yahoo.com)
I. JEPU
Affiliation:
National Institute for Lasers, Plasma and Radiation Physics, 077125 Bucharest, Romania (cata_ticos@yahoo.com)
C. P. LUNGU
Affiliation:
National Institute for Lasers, Plasma and Radiation Physics, 077125 Bucharest, Romania (cata_ticos@yahoo.com)
P. CHIRU
Affiliation:
National Institute for Lasers, Plasma and Radiation Physics, 077125 Bucharest, Romania (cata_ticos@yahoo.com)
V. ZAROSCHI
Affiliation:
National Institute for Lasers, Plasma and Radiation Physics, 077125 Bucharest, Romania (cata_ticos@yahoo.com)
A. M. LUNGU
Affiliation:
National Institute for Lasers, Plasma and Radiation Physics, 077125 Bucharest, Romania (cata_ticos@yahoo.com)
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Abstract

A dust crystal levitated in the sheath of a radio-frequency plasma is subjected to a pulsed plasma jet expelled from a minicoaxial gun. The dust particles, initially found at rest and self-organized in a 3-D structure, are dragged by the plasma jet for a short distance and come to rest when the action of the jet terminates. The trajectories of the microparticles are tracked in vertical and horizontal planes with a high-speed camera. From in situ observations of dust particle dynamics the dust acceleration is compared to numerical simulations.

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