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Vertical Interaction Between Dust Particles Confined in a Glass Box in a Complex Plasma

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7 Author(s)
Jie Kong ; Center for Astrophys., Space Phys., & Eng. Res., Baylor Univ., Waco, TX, USA ; Ke Qiao ; Carmona-Reyes, J. ; Douglass, A.
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In this experiment, falling particle trajectories within and without a glass box placed on the lower electrode in a Gaseous Electronics Conference reference cell are recorded and analyzed, and the electrostatic forces exerted on the dust particles are measured and compared. Experimental results show that, for particles falling in a complex plasma with no glass box, only a single force balance point (i.e., the position where the gravitational force is balanced by the electrostatic force) exists in the vertical direction while, for particles falling inside a glass box, this force balance spans an extended vertical range.

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Plasma Science, IEEE Transactions on  (Volume:41 ,  Issue: 4 )