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It is demonstrated that the ionization events in the vicinity of a small floating grain can increase the ion flux to its surface. In this respect the effect of electron impact ionization is fully analogous to that of the ion-neutral…

等离子体物理 · 物理学 2012-03-13 Sergey A. Khrapak , Gregor E. Morfill

Biased electrodes are common components of plasma sources and diagnostics. The plasma-electrode interaction is mediated by an intervening sheath structure that influences properties of the electrons and ions contacting the electrode…

等离子体物理 · 物理学 2020-06-24 Scott D. Baalrud , Brett Scheiner , Benjamin Yee , Matthew M. Hopkins , Edward Barnat

A nanometer-sized dielectric particle lying on a dielectric substrate is exposed to the flux of low-energy electrons, ion and electron fluxes from a cold plasma and the fluxes from the combination of these two sources with the help of…

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…

等离子体物理 · 物理学 2022-02-23 P. Bajaj , S. Khrapak , V. Yaroshenko , M. Schwabe

Dust particles immersed within a plasma environment, such as those found in planetary rings or cometary environments, will acquire an electric charge. If the ratio of interparticle potential energy to average kinetic energy is high enough…

等离子体物理 · 物理学 2009-11-10 C. M. Boesse , M. K. Henry , T. W. Hyde , L. S. Matthews

Dusty plasma is an admixture of electrons, ions, and massive charged solid particles of sub-micron to micron-sized in the background of neutral gas. The dust grain medium exhibits fluid (liquid) as well as solid-like characteristics at…

等离子体物理 · 物理学 2025-01-08 Mangilal Choudhary

We recently questioned the treatment of a dust particle as a perfect absorber for electrons and ions and proposed a surface model for the charge of a dust particle in a quiescent plasma which combines the microscopic physics at the grain…

等离子体物理 · 物理学 2009-08-24 Franz X. Bronold , H. Fehske , H. Kersten , H. Deutsch

We study the effect of the velocity distributions of the plasma particles on the equilibrium charge of dust particles which suffer collisional charging, considering different forms of both isotropic and anisotropic Kappa distributions for…

等离子体物理 · 物理学 2025-09-25 Luiz Fernando Ziebell , Rudi Gaelzer

Possible existence of chaotic oscillations in ion dynamics in the sheath and pre-sheath regions of a dusty plasma, induced by externally driven dust-charge fluctuation, is presented in this work. In a complex plasma, dust charge fluctuation…

等离子体物理 · 物理学 2024-02-29 Mridusmita Das , Suniti Changmai , Madhurjya P. Bora

Expressions for the ion and electron thermal forces acting on a charged grain, suspended in a weakly ionized plasma subject to temperature gradients, are derived. The main emphasize is on the conditions pertinent to the investigations of…

等离子体物理 · 物理学 2013-01-15 Sergey A. Khrapak

Wakefield oscillations created by the ion wakefield existing below a dust particle within the plasma sheath generated above a powered lower electrode in a GEC rf reference cell carry information about the plasma sheath, the dust particle…

等离子体物理 · 物理学 2007-07-25 J. Kong , T. Hyde , L. Matthews , M. Cook , J. Schmoke , J. Carmona-Reyes

The objective of this paper is to apply the recent achievements in understanding of the non-MHD effects in plasma (acquired both in laboratory experiments, as well as in theory), to the interstellar phenomena. Applied to the space plasma,…

天体物理学 · 物理学 2007-05-23 L. I. Rudakov , A. V. Gretchikha , C. S. Liu , G. M. Milikh

A self-consistent three-dimensional model for a complex (dusty) plasma is used to study the effects of multiple-sized dust grains in a dust crystal. In addition to the interparticle forces, which interact through a Yukawa potential, the…

天体物理学 · 物理学 2009-11-11 L. S. Matthews , K. Qiao , T. W. Hyde

Experiments are performed in which dust particles are levitated at varying heights above the powered electrode in a RF plasma discharge by changing the discharge power. The trajectories of particles dropped from the top of the discharge…

等离子体物理 · 物理学 2015-06-03 Angela Douglass , Victor Land , Ke Qiao , Lorin Matthews , Truell Hyde

We investigated the electrostatic interaction between two identical dust grains of an infinite mass immersed in homogeneous plasma by employing first-principles N-body simulations combined with the Ewald method. We specifically tested the…

等离子体物理 · 物理学 2014-12-25 Hotaka Itou , Takanobu Amano , Masahiro Hoshino

We study the secondary electron emissions induced by the impact of electrons on dust grains and the resulting dust charging processes in the nonequilibrium dusty plasma with power-law distributions. We derive new expressions of the…

等离子体物理 · 物理学 2015-08-10 Jingyu Gong , Jiulin Du

Two in-situ experimental methods are presented in which dust particles are used to determine the extent of the sheath and gain information about the time-averaged electric force profile within a RF plasma sheath. These methods are…

等离子体物理 · 物理学 2016-08-24 Angela Douglass , Victor Land , Ke Qiao , Lorin Matthews , Truell Hyde

The void, which is a dust-free region inside the dust cloud in the plasma, results from a balance of the electrostatic force and the ion drag force on a dust particulate. The ion drag force having numerous forms, some of which are based on…

等离子体物理 · 物理学 2009-11-13 E. Nebbat , R. Annou , R. Bharuthram

The plasma is generated in a low frequency glow discharge within an elongated glass tube oriented vertically. The dust particles added to the plasma are confined above the heater and form counter-rotating clouds close to the tube centre.…

等离子体物理 · 物理学 2008-08-14 S. Mitic , R. Suetterlin , A. V. Ivlev , H. Hoefner , M. H. Thoma , S. Zhdanov , G. E. Morfill

In modern high-intensity accelerators, the circulating beam interacts in many ways with the vacuum beam pipe, causing a variety of different phenomena. Most of them have been discussed at length in other contributions to this CAS report. I…

加速器物理 · 物理学 2020-06-08 Roberto Cimino