Dusty plasma (Yukawa) rings

Sheridan, T. E.; Gallagher, James C.

doi:10.1063/1.4971230

Cited by 13 publications

(22 citation statements)

References 24 publications

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“…If we take κ = 1 (Sheridan & Gallagher 2016) as a typical value, then from (2.4), q = −(11 500 ± 500)e, which is consistent with previous measurements (Sheridan 2005;Sheridan & Gallagher 2016).…”

Section: Resultssupporting

confidence: 89%

“…The dependence of the normalized acoustic speed (i.e. f (κ)) on κ is shown in figure 1(b), from which we see that the acoustic speed has only a weak dependence on κ when κ 1, which is often the case in 1-D dusty plasma experiments (Sheridan & Gallagher 2016). The real part of the dispersion relation is only slightly modified by weak damping γ ω 0 .…”

Section: Dust Lattice Wavesmentioning

confidence: 78%

“…It is possible to create longer and more uniform chains using an annular well (Sheridan & Gallagher 2016). The dispersion relation in such chains is well approximated (Sheridan 2009;Tkachenko et al 2011) by the 1-D theory for straight line configurations when the ring diameter is much larger than the lattice constant, as verified experimentally (Sheridan & Gallagher 2016). There have been several studies of the conditions under which nonlinear effects become important in 2-D dusty plasmas Nosenko et al 2004;Sheridan, Nosenko & Goree 2008).…”

Section: Introductionmentioning

confidence: 82%

“…Yukawa chains) can be made by using additional confinement in the horizontal plane. Such configurations include straight lines in biharmonic wells (Homann et al 1997;Liu, Avinash & Goree 2003Liu & Goree 2005) and rings in annular wells (Sheridan 2009;Tkachenko, Sheridan & Misko 2011;Sheridan & Gallagher 2016).…”

Section: Introductionmentioning

confidence: 99%

“…2001; Liu et al. 2003, 2004; Liu & Goree 2005) and annular wells (Sheridan & Gallagher 2016), small-amplitude longitudinal waves are found to be well described by the dispersion relation for a Yukawa chain (Melandsø 1996; Homann et al. 1997; Liu & Goree 2005; Tkachenko et al.…”

Section: Introductionmentioning

confidence: 99%

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Large-amplitude acoustic solitary waves in a Yukawa chain

Sheridan

Gallagher

2017

J. Plasma Phys.

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We experimentally study the excitation and propagation of acoustic solitary waves in a one-dimensional dusty plasma (i.e. a Yukawa chain) with n = 65 particles interacting through a screened Coulomb potential. The lattice constant a = 1.02 ± 0.02 mm. Waves are launched by applying a 100 mW laser pulse to one end of the chain for laser pulse durations from 0.10 to 2.0 s. We observe damped solitary waves which propagate for distances 30a with an acoustic speed c s = 11.5 ± 0.2 mm s −1. The maximum velocity perturbation increases with laser pulse duration for durations 0.5 s and then saturates at ≈15 %. The wave speed is found to be independent of the maximum amplitude, indicating that the formation of nonlinear solitons is prevented by neutral-gas damping.

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Section: Resultssupporting

confidence: 89%

Section: Dust Lattice Wavesmentioning

confidence: 78%

Section: Introductionmentioning

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Large-amplitude acoustic solitary waves in a Yukawa chain

Sheridan

Gallagher

2017

J. Plasma Phys.

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Ring dust structures in a weak inhomogeneous magnetic field

Kodanova

Abdirakhmanov

D’yachkov

et al. 2022

Contributions to Plasma Physics

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Experimental results on the influence of an external inhomogeneous magnetic field created in the end areas of the coil on the dynamics of a ring‐shaped dust structure in a stratified glow discharge in argon are presented. The rotational behaviour of the ring was investigated at different magnetic fields in the range up to 16 mT. It was found that the direction of rotational motion of dust particles in an inhomogeneous magnetic field depends on the direction of its radial component. A theoretical model was proposed to explain the experimental observations.

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Dust lattice waves in Debye binary dust chain

Chen

Liu

2017

Physics of Plasmas

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The dust lattice waves in a one-dimensional Debye binary dust chain consisting of two distinct dust particle species with different charges and masses are investigated. It is found that there are two branches for both longitudinal and transverse modes, namely the optical mode of high frequency and the acoustic mode of low frequency, which will be merged into one ordinary longitudinal (transverse) mode of single dust chain. The influence of the parameters, i.e., the dimensionless lattice parameter α, the mass ratio σ, and the charge ratio ε of the two particles, on the dispersion relation of longitudinal and transverse waves is discussed. Furthermore, the branching and the merging of longitudinal and transverse waves are discussed in detail.

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Dusty plasma (Yukawa) rings

Cited by 13 publications

References 24 publications

Large-amplitude acoustic solitary waves in a Yukawa chain

Large-amplitude acoustic solitary waves in a Yukawa chain

Ring dust structures in a weak inhomogeneous magnetic field

Dust lattice waves in Debye binary dust chain

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