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The first comprehensive study of electron gains and losses in hypersonic air flows including the full coupling between the non-neutral plasma sheaths and the quasi-neutral plasma flow is here presented. Such is made possible by the use of…

等离子体物理 · 物理学 2022-02-02 B. Parent , P. Thoguluva Rajendran , A. Omprakas

The electron sheath is a particular electron-rich sheath with negative net charges where plasma potential is lower than the biased electrode. Here an improved understanding of electron sheath theory is provided using both fluid and kinetic…

等离子体物理 · 物理学 2022-07-27 Guang-Yu Sun , Zhang Shu , An-Bang Sun , Guan-Jun Zhang

The charge of micrometer-sized dust particles suspended in plasma above the powered electrode of radio-frequency (RF) discharges is studied. Using a self-consistent fluid model, the plasma profiles above the electrode are calculated and the…

等离子体物理 · 物理学 2015-05-28 Angela Douglass , Victor Land , Lorin Matthews , Truell Hyde

The sheath formation in a weakly magnetized collisionless electronegative plasma consisting of electrons, negative and positive ions has been numerically investigated using the hydrodynamic equations. The electrons and negative ions are…

等离子体物理 · 物理学 2020-06-25 R. Paul , S. Adhikari , R. Moulick , S. S. Kausik , B. K. Saikia

The collision of two expanding plasma clouds is investigated, emphasizing instabilities and electron energization in the plasma mixing layer. This work is directly relevant to laboratory experiments with explosively-created laser or z-pinch…

等离子体物理 · 物理学 2022-08-24 M. A. Malkov , V. I. Sotnikov

A review of the theoretical and computational aspects of plasma-wall transition is presented. The conditions for the existence of plasma sheaths in front of a solid surface are established. Various regimes are analyzed -collisionless and…

等离子体物理 · 物理学 2021-10-06 Giovanni Manfredi , Fabrice Valsaque

New non-linear, spatially periodic, long wavelength electrostatic modes of an electron fluid oscillating against a motionless ion fluid (Langmuir waves) are given, with viscous and resistive effects included. The cold plasma approximation…

等离子体物理 · 物理学 2010-05-28 A. A. Skorupski , E. Infeld

Dust particulates immersed in a quasineutral plasma can emit electrons in several important applications. Once electron emission becomes strong enough, the dust enters the positively charged regime where the conventional…

等离子体物理 · 物理学 2014-08-19 Gian Luca Delzanno , Xian-Zhu Tang

We consider a three-dimensional kinetic model for a two species plasma consisting of electrons and ions confined by an external nonconstant magnetic field. Then we derive a kinetic-fluid model when the mass ratio $m_e/m_i$ tends to zero.…

偏微分方程分析 · 数学 2026-01-08 Maxime Herda

Equilibrating gravitation by electric forces, microparticles can be confined in the plasma sheath above suitably biased local electrodes.Their position depends on the detailed structure of the plasma sheath and on the charge that the…

等离子体物理 · 物理学 2010-10-15 G. Schubert , R. Basner , H. Kersten , H. Fehske

We obtain exact upper and lower bounds on the steady state drift velocity, and kinetic energy of electrons, driven by an external field in a weakly ionized plasma (swarm approximation). The scattering is assumed to be elastic with…

等离子体物理 · 物理学 2009-10-31 A. Rokhlenko , J. L. Lebowitz

We propose a theoretical ground for emissive capacitively coupled radio-frequency plasma sheath under low pressure. The rf sheath is assumed to be collisionless, and oscillates with external source. A known sinusoidal voltage instead of…

等离子体物理 · 物理学 2020-11-25 Guang-Yu Sun , Han-Wei Li , An-Bang Sun , Yuan Li , Bai-Peng Song , Hai-Bao Mu , Xiao-Ran Li , Guan-Jun Zhang

From particle lifting in atmospheric boundary layers to dust ingestion in jet engines, the transport and deposition of inertial particles in wall-bounded turbulent flows are prevalent in both nature and industry. Due to triboelectrification…

流体动力学 · 物理学 2025-05-14 Xuan Ruan , Miguel X. Diaz-Lopez , Matthew T. Gorman , Rui Ni

We show that an electro-osmotic flow near the slippery hydrophobic surface depends strongly on the mobility of surface charges, which are balanced by counter-ions of the electrostatic diffuse layer. For a hydrophobic surface with immobile…

流体动力学 · 物理学 2015-04-03 S. R. Maduar , A. V. Belyaev , V. Lobaskin , O. I. Vinogradova

The boundary problem about behavior (oscillations) of the electronic plasmas with arbitrary degree of degeneration of electronic gas in half-space with specular boundary conditions is analytically solved. The kinetic equation of…

等离子体物理 · 物理学 2017-03-07 A. V. Latyshev , S. Sh. Suleymanova

The problem of sheath formation in front of a conductive planar plate inserted into the plasma is formulated. Initially, the plate is assumed to be neutral. It is shown that the charging-up process of the plate is accompanied by the…

等离子体物理 · 物理学 2007-05-23 Catalin Lupu , Davy D. Tskhakaya , Siegbert Kuhn , Milan Cercek , Roman Schrittwieser , Cheorghe Popa

In this work, we analyze the creation of the discharge asymmetry and the concomitant formation of the DC self-bias voltage in capacitively coupled radio frequency plasmas driven by multi-frequency waveforms, as a function of the electrode…

等离子体物理 · 物理学 2024-06-19 R. U. Masheyeva , K. N. Dzhumagulova , M. Myrzaly , J. Schulze , Z. Donko

Charge separation effects in the expansion of magnetized relativistic electron-ion plasmas into a vacuum are examined using 2-1/2-dimensional particle-in-cell plasma simulations. The electrostatic field at the plasma surface decelerates…

天体物理学 · 物理学 2009-11-10 Kazumi Nishimura , Edison Liang , S. Peter Gary

We study spherically symmetric oscillations of electrons in plasma in the frame of classical electrodynamics. Firstly, we analyze the electromagnetic potentials for the system of radially oscillating charged particles. Secondly, we consider…

等离子体物理 · 物理学 2010-04-27 Maxim Dvornikov

This paper studies the boundary behaviour at mechanical equilibrium at the ends of a finite interval of a class of systems of interacting particles with monotone decreasing repulsive force. Our setting covers pile-ups of dislocations,…

偏微分方程分析 · 数学 2016-09-13 Cameron Hall , Thomas Hudson , Patrick van Meurs