1. Observation and Analysis of Paired-Particle Motions in Fine-Particle Plasma.
- Author
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Koga, Teruaki, Mieno, Tetsu, and Hayashi, Yasuaki
- Subjects
MOTION analysis ,FAST Fourier transforms ,HIGH-frequency discharges ,THREE-dimensional imaging ,ARGON plasmas - Abstract
We found that steady-state paired-particle motion was often observed in a fine-particle cloud in the argon plasma produced by a 100-kHz high-frequency discharge. Monodispersed spherical silica particles with a diameter of $5.0~\mu \text{m}$ were trapped in the plasma. The 2-D motion of these charged particles was carefully recorded using a microscope camera, and their orbits and perturbation frequencies were analyzed. The loci and fast Fourier transform spectra of many paired particles were obtained. By moving the camera horizontally, 3-D images of the particles were recorded, and a 3-D map of the positions of charged particles was obtained. It is considered that the forces inducing the paired-particle motion were generated by the Debye shielding and the electric field surrounding the paired particles. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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