Measurements of forces acting on suspended microparticles in the void region of a complex plasma.
A laboratory experiment has been performed in which a temperature gradient is used to generate a large central void in a rf-generated complex plasma. Through the use of laser flashing techniques, two-dimensional velocity vectors have been obtained from particles falling from the top to the bottom of the void. These particles are used to generate a two-dimensional map of the acceleration, and consequently the net forces, that act upon particles in the void.
Thomas
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Department of Physics, Auburn University, Auburn, Alabama 36849, USA. etjr@physics.auburn.edu
Annaratone
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Morfill
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Rothermel
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