Vertical probe-induced asymmetric dust oscillation in complex plasma
| dc.contributor.author | Harris, Brandon Joseph. | |
| dc.contributor.author | Matthews, Lorin Swint. | |
| dc.contributor.author | Hyde, Truell Wayne. | |
| dc.date.accessioned | 2014-07-31T15:13:56Z | |
| dc.date.available | 2014-07-31T15:13:56Z | |
| dc.date.issued | 2013-05-24 | |
| dc.description.abstract | A complex plasma vertical oscillation experiment which modifies the bulk is presented. Spherical, micron-sized particles within a Coulomb crystal levitated in the sheath above the powered lower electrode in a GEC reference cell are perturbed using a probe attached to a Zyvex S100 Nanomanipulator. By oscillating the probe potential sinusoidally, particle motion is found to be asymmetric, exhibiting superharmonic response in one case. Using a simple electric field model for the plasma sheath, including a nonzero electric field at the sheath edge, dust particle charges are found by employing a balance of relevant forces and emission analysis. Adjusting the parameters of the electric field model allowed the change predicted in the levitation height to be compared with experiment. A discrete oscillator Green's function is applied using the derived force, which accurately predicts the particle's motion and allows the determination of the electric field at the sheath edge. | en_US |
| dc.description.keywords | plasma sheath | en_US |
| dc.description.keywords | probe | en_US |
| dc.description.keywords | oscillation | en_US |
| dc.identifier.citation | Phys Rev E, 87(5), 053109, 2013 | en_US |
| dc.identifier.doi | 10.1103/PhysRevE.87.053109 | |
| dc.identifier.uri | http://hdl.handle.net/2104/9127 | |
| dc.language.iso | en | en |
| dc.publisher | Physical Review E | en_US |
| dc.title | Vertical probe-induced asymmetric dust oscillation in complex plasma | en_US |
| dc.type | Article | en |