The magnitude and structure of the ion wakefield potential below a single negatively-charged dust particle levitated in the plasma sheath region was calculated and measured. Attractive and repulsive components of the interaction force were extracted from a trajectory analysis of low-energy collisions between different mass particles in a well-defined electrostatic potential.
Published in:
Plasma Science, IEEE Transactions on
(Volume:33
,
Issue:
2
)
Date of Publication: Apr 2005