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We consider a system of charged particles interacting with an unscreened Coulomb repulsion in a two-dimensional parabolic confining trap. The static charge on a portion of the particles is twice as large as the charge on the remaining…

软凝聚态物质 · 物理学 2016-08-31 J. A. Drocco , C. J. Olson Reichhardt , C. Reichhardt , B. Janko

Laboratory realizations of 2D plasma crystals typically involve monodisperse microparticles confined into horizontal monolayers in radio-frequency (rf) plasma sheaths. This gives rise to the so-called plasma wakes beneath the…

软凝聚态物质 · 物理学 2020-10-14 A. V. Zampetaki , H. Huang , C. -R. Du , H. Löwen , A. V. Ivlev

A pair of curved shocks in a collisionless plasma is examined with a two-dimensional particle-in-cell (PIC) simulation. The shocks are created by the collision of two electron-ion clouds at a speed that exceeds everywhere the threshold…

高能天体物理现象 · 物理学 2015-07-14 M. E. Dieckmann , A. Bock , H. Ahmed , D. Doria , G. Sarri , A. Ynnerman , M. Borghesi

The nonlinear propagation of electromagnetic waves in pair plasmas, in which the electrostatic potential plays a very important but subdominant role of a "binding glue" is investigated. Several mechanisms for structure formation are…

等离子体物理 · 物理学 2015-05-14 S. M. Mahajan , N. L. Shatashvili , V. I. Berezhiani

The formation of novel dynamical states for a collection of dust particles in two dimensions has been shown with the help of Molecular Dynamics (MD) simulation. The charged dust particles interact with each other with Yukawa pair potential…

等离子体物理 · 物理学 2020-09-02 Srimanta Maity , Priya Deshwal , Mamta Yadav , Amita Das

The stopping power and energy loss rate of charged particles traversing a two-dimensional Dirac plasma is investigated. The Dirac plasma considered here models a solid state system, recently realized graphene monolayer, where the conduction…

介观与纳米尺度物理 · 物理学 2008-08-26 Aqsa Arshad , Kashif Sabeeh , M. Tahir

Ferroelectricity in atomically thin bilayer structures has been recently predicted1 and measured[2-4] in two-dimensional (2D) materials with hexagonal non-centrosymmetric unit-cells. Interestingly, the crystal symmetry translates lateral…

In this paper the distribution of charged particles is constructed under the approximation of ambipolar diffusion. The results of mathematical modelling in two-dimensional case taking into account the velocities of the system are presented.

计算工程、金融与科学 · 计算机科学 2007-05-23 P. Nefyodov , V. Reztsov , O. Riabinina

We present a theoretical and numerical study of the self-steepening and shock formation of large-amplitude dust ion-acoustic waves (DIAWs) in dusty plasmas. We compare the non-dispersive two fluid model, which predicts the formation of…

等离子体物理 · 物理学 2007-05-23 Bengt Eliasson , Padma Kant Shukla

Using numerical simulations, we study the dynamical evolution of particles interacting via competing long-range repulsion and short-range attraction in two dimensions. The particles are compressed using a time-dependent quasi-one…

软凝聚态物质 · 物理学 2017-12-06 D. McDermott , C. J. Olson Reichhardt , C. Reichhardt

We discuss the phenomenon of energization of relativistic charged particles in three-dimensional (3D) incompressible MHD turbulence and the diffusive properties of the motion of the same particles. We show that the random electric field…

高能天体物理现象 · 物理学 2022-04-05 Oreste Pezzi , Pasquale Blasi , William H. Matthaeus

In a recent paper we have analyzed the AdS/CFT duals to shock waves propagating in the N=4 plasma. Here we study further properties of the system. In the gravity description we consider the properties of the dual black holes, showing in…

高能物理 - 理论 · 物理学 2015-05-28 Sergei Khlebnikov , Martin Kruczenski , Georgios Michalogiorgakis

We report on experimental observations of flow induced large amplitude dust-acoustic shock waves (DASW) in a complex plasma. The experiments have been carried out in a $\Pi$ shaped DC glow discharge experimental device using kaolin…

等离子体物理 · 物理学 2016-08-24 S. Jaiswal , P. Bandyopadhyay , A. Sen

Two charge- and current neutral plasma beams are modelled with a one-dimensional PIC simulation. The beams are uniform and unbounded. The relative speed between both beams is 0.4c. One beam is composed of electrons and protons and one out…

天体物理学 · 物理学 2014-11-18 M E Dieckmann , A Bret

A model predicting the structure of repulsive, spherically symmetric, monodisperse particles confined between two walls is presented. We study the buckling transition of a single flat layer as the double layer state develops. Experimental…

凝聚态物理 · 物理学 2009-10-22 T Chou , David R. Nelson

We study the structure of shocks in clumpy media, using a multifluid formalism. As expected, shocks broaden as they weaken: for sufficiently weak shocks, no viscous subshock appears in the structure. This has significant implications for…

天体物理学 · 物理学 2009-11-07 R. J. R. Williams , J. E. Dyson

A one-dimensional magnetophotonic crystal with a nonlinear defect placed either symmetrically or asymmetrically inside the structure is considered. Simultaneous effects of time-reversal nonreciprocity and nonlinear spatial asymmetry in the…

光学 · 物理学 2012-07-03 Vladimir R. Tuz , Sergei V. Zhukovsky , Sergey L. Prosvirnin

Experiments and numerical simulations of inertial particles in underexpanded jets are performed. The structure of the jet is controlled by varying the nozzle pressure ratio, while the influence of particles on emerging shocks and…

The formation of unmagnetized electrostatic shock-like structures with a high Mach number is examined with one- and two-dimensional particle-in-cell (PIC) simulations. The structures are generated through the collision of two identical…

等离子体物理 · 物理学 2015-06-17 Mark E Dieckmann , Gianluca Sarri , Domenico Doria , Martin Pohl , Marco Borghesi

We study the out-of-equilibrium dynamics of a two-dimensional paraxial fluid of light using a near-resonant laser propagating through a hot atomic vapor. We observe a double shock-collapse instability: a shock (gradient catastrophe) for the…