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

Ikkurthi, V. R.; Matyash, K.; Melzer, A.; Schneider, R.

doi:10.1063/1.3041659

Cited by 18 publications

(11 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Note that a similar tendency in the behavior of the particle charge has been revealed in numerical simulations. 18 Continuing now with the sheath electric field, its local value E 0 = m 0 g / q 0 is found to be E 0 =26 V/ cm at pressure p = 30 Pa, E 0 =38 V/ cm at p = 55 Pa, and E 0 =45 V/ cm at FIG. 5.…”

Section: Resultsmentioning

confidence: 90%

Parameters of a collisional radio-frequency sheath and dust characteristics resulting from the microparticle levitation

et al. 2009

View full text Add to dashboard Cite

The screening length, the time-average electric field, and the particle charge as well as the local vertical gradients of these quantities are determined experimentally within a sheath of a capacitively coupled rf, 13.56 MHz, discharge at enhanced argon gas pressures of 30, 55, and 100 Pa. The parameters are derived directly from comparative measurements of levitation positions of the particles of different sizes and variations in the levitation heights caused by formation of new dust layers. The electrostatic effect of the horizontally extended dust layers on the sheath electric field is investigated.

show abstract

Section: Resultsmentioning

confidence: 90%

Parameters of a collisional radio-frequency sheath and dust characteristics resulting from the microparticle levitation

et al. 2009

View full text Add to dashboard Cite

show abstract

“…The largest flux ratios of electrons to ions have been found close to the presheath in such plasmas [35]. As a result, the magnitude of the fluctuation reduces about an order of magnitude from the case in [34] to Fig.…”

Section: A Dust Chargingmentioning

confidence: 85%

Phase-resolved optical emission of dusty rf discharges: Experiment and simulation

et al. 2011

View full text Add to dashboard Cite

The spectral emission of atoms in a dusty radio frequence (rf) discharge plasma in argon and helium has been measured with a gated ICCD camera. The spatially and temporally resolved emission/excitation of the argon and helium atoms during the rf cycle in the dusty discharge was compared to the dust-free case. In the bulk plasma above the dust cloud, the emission is clearly enhanced in the dusty discharge with respect to the pure discharge, whereas in the sheath the emission is reduced. In addition, the emission of a dusty argon plasma is studied via particle-particle particle-mesh (P³M) simulations. The rf dynamics with a single dust particle trapped in the sheath was calculated. Like in the experiment the dust modifies the atomic emission. The spatiotemporal excitation pattern of the experiment is reproduced and a detailed understanding of the difference in excitation of the discharge with and without dust is presented.

show abstract

“…SCEPTIC [15], COPTIC [21], a hybrid P 3 M-code [37] and DiP3D [16] use three-dimensional grids to simulate the plasma dynamics around dust grains with realistic grain properties (i.e. Powerful tools for this purpose are Molecular Dynamics (MD) simulations and Particle-In-Cell (PIC) methods.…”

Section: Wake Fields In Theory Simulation and Experimentsmentioning

confidence: 99%

Wake Formation and Wake Field Effects in Complex Plasmas

Block

Carstensen

Ludwig

et al. 2012

Contrib. Plasma Phys.

Self Cite

View full text Add to dashboard Cite

The formation of wake fields downstream of an objects in flowing plasmas has strong implications on structure, stability and dynamics of complex plasmas. This paper aims at putting recent experimental investigations and different theoretical approaches on charging of dust grains, stability of dust grain arrangements and the dynamical properties of complex plasmas into perspective. Further, the combination of wake fields and grain confinement is discussed, which is the generic situation in complex plasmas. It is shown that in spherical traps the resulting competition of trap geometry and vertical alignment leads to a sophisticated mixture of nested shell and string order.

show abstract

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

Cited by 18 publications

References 54 publications

Parameters of a collisional radio-frequency sheath and dust characteristics resulting from the microparticle levitation

Parameters of a collisional radio-frequency sheath and dust characteristics resulting from the microparticle levitation

Phase-resolved optical emission of dusty rf discharges: Experiment and simulation

Wake Formation and Wake Field Effects in Complex Plasmas

Contact Info

Product

Resources

About