Confinement of Coulomb balls

Arp, O.; Block, Dietmar; Klindworth, M.; Piel, A.

doi:10.1063/1.2147000

Cited by 110 publications

(95 citation statements)

References 22 publications

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“…This model has been found to be close to the experimental situation under which spherical dust crystals form [29]. Deviations from isotropic confinement have been discussed in [25].…”

Section: Model and Simulation Techniquementioning

confidence: 51%

“…Here, the ground state configuration changes from (30,7) to (29,8) at a screening value of κ = 4.2 and back to (30,7) at a screening value of κ = 6.91. The seven particles on the inner shell are not a platonic body and, as one can see from figure 4, it is not a common configuration compared to six or eight particles in the center.…”

Section: Anomalies Of the Third Kind: Re-entrant Shell Transition Upomentioning

confidence: 99%

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Ground states of finite spherical Yukawa crystals

et al. 2008

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On the Coulomb-dipole transition in mesoscopic classical and quantum electron-hole bilayers P Ludwig, K Balzer, A Filinov et al. Abstract. Small three-dimensional strongly coupled clusters of charged particles in a spherical confinement potential arrange themselves in nested concentric shells. If the particles are immersed into a background plasma the interaction is screened. The cluster shell configuration is known to be sensitive to the screening strength. With increased screening, an increased population of the inner shell(s) is observed. Here, we present a detailed analysis of the ground state shell configurations and configuration changes in a wide range of screening parameters for clusters with particle numbers N in the range of 11 to 60. We report three types of anomalous behaviors which are observed upon increase of screening, at fixed N or for an increase of N at fixed screening. The results are obtained by means of extensive first principle molecular dynamics simulations.

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“…This model has been found to be close to the experimental situation under which spherical dust crystals form [29]. Deviations from isotropic confinement have been discussed in [25].…”

Section: Model and Simulation Techniquementioning

confidence: 51%

Section: Anomalies Of the Third Kind: Re-entrant Shell Transition Upomentioning

confidence: 99%

Ground states of finite spherical Yukawa crystals

et al. 2008

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“…These biopolymers form ring structures under the laser radiation forces. Such kinds of pattern formations have also been observed in trapped liquid crystals [16][17][18][19] and in point-particle plasmas [20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 72%

Shell formation in short like-charged polyelectrolytes in a harmonic trap

Dutta

Jho

2016

Phys. Rev. E

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Inspired by recent experiments and simulations on pattern formation in biomolecules by optical tweezers, a theoretical description based on the reference interaction site model (RISM) is developed to calculate the equilibrium density profiles of small polyelectrolytes in an external potential. The formalism is applied to the specific case of a finite number of Gaussian and rodlike polyelectrolytes trapped in a harmonic potential. The density profiles of the polyelectrolytes are studied over a range of lengths and numbers of polyelectrolytes in the trap, and the strength of the trap potential. For smaller polymers we recover the results for point charges. In the mean field limit the longer polymers, unlike point charges, form a shell at the boundary layer. When the interpolymer correlations are included, the density profiles of the polymers show sharp shells even at weaker trap strengths. The implications of these results are discussed. * Electronic address: ysjho@apctp.org 1 arXiv:1511.03792v2 [cond-mat.soft]

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“…The parameters of the simulation were chosen to represent the conditions of the experiments with Yukawa balls (see Ref. [54]). As background gas, argon with pressure p = 50 Pa and neutral gas temperature T = 300 K was used.…”

Section: Methods Of Computationmentioning

confidence: 99%

Computation of dust charge and potential on a static spherical dust grain immersed in rf discharges

et al. 2008

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Dust charge and potential on static spherical dust grains located in an argon rf discharge under typical laboratory experiment conditions have been computed using a three-dimensional ParticleParticle-Particle-Mesh (P 3 M ) code. Elastic and inelastic collisions have been included in the current model to obtain realistic rf discharge plasma conditions. Dust charge, potential and potential distribution around the dust have been computed for various sizes of dust placed at different locations in the rf discharge. The dust charge is found to be smaller than the values from simple Orbit Motion Limited (OML) model due to ion-neutral collisions. Further, the dust potential has been found to be increasing with dust-size. Moreover, the shielding length of the dust has been found between electron and ion Debye lengths.

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Confinement of Coulomb balls

Cited by 110 publications

References 22 publications

Ground states of finite spherical Yukawa crystals

Ground states of finite spherical Yukawa crystals

Shell formation in short like-charged polyelectrolytes in a harmonic trap

Computation of dust charge and potential on a static spherical dust grain immersed in rf discharges

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