High-speed imaging of dust particles in plasma

Abstract

High-speed imaging is a powerful tool for studying dusty plasmas. The recorded trajectories of dust particles can provide direct information about the physical processes involved in dust-plasma and dust-dust interactions. A review of some experiments and their imaging techniques employed for tracking dust particles immersed in low-ionized gases and in high-density plasma jets is presented. Digital cameras are used to record the motion of slow or hypervelocity dust particles dragged by plasma jets, or to evidence single or collective dust particle oscillations and vibrations in the plasma sheath.

Tracking and Linking of Microparticle Trajectories During Mode-Coupling Induced Melting in a Two-Dimensional Complex Plasma Crystal

“…The study of collective motion in complex plasmas requires high-speed imaging of the microparticle system [ 37 ]. For (quasi-) 2D complex plasmas, a laser light sheet is usually used to illuminate the monolayer of particles, and the scattered light is then recorded by the camera to monitor dust trajectories on the plane.…”

Determination of yield stress of 2D (Yukawa) dusty plasma

“…Dusty plasmas have four constituents: electrons, ions, neutral gas, and micronsize particles of solid matter. [9][10][11][12][13][14][15][16][17][18][19][20][21] These solid particles, which are often called dust particles, carry a large negative charge. A collection of dust particles can be electrically confined into a three-dimensional (3D) cloud or a two-dimensional (2D) layer.…”

Application of particle image velocimetry to dusty plasma systems

“…For systems with sufficiently low number densities, particle tracking velocimetry (PTV) techniques are often employed to measure the motion of individual dust grains (Feng, Goree & Liu 2007; Ticos et al. 2013; Melzer et al. 2016).…”

“…From these measurements of particle transport, it is then possible to gain insight into the underlying physics that governs the behaviour of the dust component, as well as the state of the background plasma. For systems with sufficiently low number densities, particle tracking velocimetry (PTV) techniques are often employed to measure the motion of individual dust grains (Feng, Goree & Liu 2007;Ticos et al 2013;Melzer et al 2016). For dusty plasmas with higher number densities, where it is difficult to identify or track individual particles, particle image velocimetry (PIV) techniques can be used to measure the motion of groups of particles (Thomas Jr 1999;Thomas Jr, Williams & Silver 2004;Williams 2011;Williams et al 2012).…”