Spatial distribution of Dust Density Wave Properties in Fluid Complex Plasmas

Abstract

Complex plasmas consist of microparticles embedded in a low-temperature plasma and allow investigating various effects by tracing the motion of these microparticles. Dust density waves appear in complex plasmas as self-excited acoustic waves in the microparticle fluid at low neutral gas pressures. Here we show that various properties of these waves depend on the position of the microparticle cloud with respect to the plasma sheath and explain this finding in terms of the underlying ion-drift instability. These results may be helpful in better understanding the propagation of dust density waves in complex plasmas and beyond, for instance, in astrophysical dusty plasmas.

arXiv comment8 pages, 8 figures

References in corpus (8)

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• Particle flows in a dc discharge in laboratory and microgravity conditions
• Particle charge in PK-4 dc discharge from ground-based and microgravity experiments
• Dust density waves in a dc flowing complex plasma with discharge polarity reversal
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• Ion drift instability in a strongly coupled collisional complex plasma
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Cited by in corpus (3)

• Synchronization of Dust Acoustic Waves in a forced Korteweg-de Vries-Burgers model
• Variational approach to Yukawa fluids. II. Instantaneous elastic moduli and sound velocities
• Separation of bi-dispersed microspheres in dusty plasma ratchet experiments