Determination of the dust screening length by laser-excited lattice waves

Homann, A.; Melzer, A.; Peters, Sebastian; Piel, A.

doi:10.1103/physreve.56.7138

Cited by 287 publications

(162 citation statements)

References 15 publications

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“…Experimental research has been conducted [4][5][6][7][8] on both longitudinal and transverse waves in 2D Coulomb crystals. In these experiments, a 2D hexagonal lattice of dust particles was established within the sheath region of the lower electrode in a rf discharge plasma.…”

Section: Introductionmentioning

confidence: 99%

Dispersion relations for thermally excited waves in plasma crystals

Qiao

Hyde

2003

J. Phys. A: Math. Gen.

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Thermally excited waves in a Plasma crystal were numerically simulated using a Box_Tree code. The code is a Barnes_Hut tree code proven effective in modeling systems composed of large numbers of particles. Interaction between individual particles was assumed to conform to a Yukawa potential. Particle charge, mass, density, Debye length and output data intervals are all adjustable parameters in the code. Employing a Fourier transform on the output data, dispersion relations for both longitudinal and transverse wave modes were determined. These were compared with the dispersion relations obtained from experiment as well as a theory based on a harmonic approximation to the potential. They were found to agree over a range of 0.9<κ<5, where κ is the shielding parameter, defined by the ratio between interparticle distance a and dust Debye length λ D . This is an improvement over experimental data as current experiments can only verify the theory up to κ = 1.5.

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Section: Introductionmentioning

confidence: 99%

Dispersion relations for thermally excited waves in plasma crystals

Qiao

Hyde

2003

J. Phys. A: Math. Gen.

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“…Previous experimental work on 1D dusty plasmas has focused on straight chains confined in highly anisotropic two-dimensional (2D) biharmonic wells [7][8][9][10][11][12]. Such systems have several drawbacks.…”

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confidence: 99%

“…We then fitted both measured dispersion relations simultaneously to theory [Eqs. (8) and (9)], where there are only three free parameters: ω 0 , α andκ. From this procedure, we found ω 0 = 16.6 rad/s, α = 1.41 andκ = 1.32 ± 0.05.…”

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confidence: 99%

Dusty plasma (Yukawa) rings

Sheridan

Gallagher

2016

Physics of Plasmas

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One-dimensional and quasi-one-dimensional strongly-coupled dusty plasma rings have been created experimentally. Longitudinal (acoustic) and transverse (optical) dispersion relations for the 1-ring were measured and found to be in very good agreement with the theory for an unbounded straight chain of particles interacting through a Yukawa (i.e., screened Coulomb or Debye-Hückel) potential. These rings provide a new system in which to study one-dimensional and quasi-onedimensional physics.

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“…Two important effects arise from the presence of dust grains, viz the reduction of the number of the electrons, as some of them are adsorbed on the grains, and the introduction of a new time scale. The charge-to-mass ratios of dust particles are smaller by several orders of magnitude than those of conventional plasma particles, leading to their support of various waves of much lower frequency such as dust-acoustic (DA) waves [3,4], dust-ion-acoustic (DIA) waves [5,6], and dust-lattice (DL) waves [7,8]. Therefore the study of dust plasmas has become the focus of research in the last decade.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Higher-Order Corrections on the Propagation of Nonlinear Dust-Acoustic Solitary Waves in a Dusty Plasma with Nonthermal Ions Distribution

Abdelwahed

El-Shewy

Zahran

et al. 2008

Zeitschrift Für Naturforschung A

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Propagation of nonlinear dust-acoustic (DA) waves in a unmagnetized collisionless mesospheric dusty plasma containing positively and negatively charged dust grains and nonthermal ion distributions are investigated. For nonlinear DA waves, a reductive perturbation method is employed to obtain a Korteweg-de Vries (KdV) equation for the first-order potential. As it is well-known, KdV equations contain the lowest-order nonlinearity and dispersion, and consequently can be adopted for only small amplitudes. As the wave amplitude increases, the width and velocity of a soliton can not be described within the framework of KdV equations. So, we extend our analysis and take higher-order nonlinear and dispersion terms into account to clarify the essential effects of higher-order corrections. Moreover, in order to study the effects of higher-order nonlinearity and dispersion on the output solution, we address an appropriate technique, namely the renormalization method.

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Determination of the dust screening length by laser-excited lattice waves

Cited by 287 publications

References 15 publications

Dispersion relations for thermally excited waves in plasma crystals

Dispersion relations for thermally excited waves in plasma crystals

Dusty plasma (Yukawa) rings

The Effect of Higher-Order Corrections on the Propagation of Nonlinear Dust-Acoustic Solitary Waves in a Dusty Plasma with Nonthermal Ions Distribution

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