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Laser-driven collisonless electrostatic shock formation and the subsequent ion acceleration have been studied in near critical density plasmas. Particle-in-cell simulations show that both the speed of laser-driven collisionless…

等离子体物理 · 物理学 2016-11-22 M. Liu , S. M. Weng , Y. T. Li , D. W. Yuan , M. Chen , P. Mulser , Z. M. Sheng , M. Murakami , L. L. Yu , X. L. Zheng , J. Zhang

In laser-plasma experiments, we observed that ion acceleration from the Coulomb explosion of the plasma channel bored by the laser, is prevented when multiple plasma instabilities such as filamentation and hosing, and nonlinear coherent…

等离子体物理 · 物理学 2012-09-13 F. Sylla , A. Flacco , S. Kahaly , M. Veltcheva , A. Lifschitz , G. Sanchez-Arriaga , E. Lefebvre , V. Malka

Supernova remnant (SNR) blast shells can reach the flow speed $v_s = 0.1 c$ and shocks form at its front. Instabilities driven by shock-reflected ion beams heat the plasma in the foreshock, which may inject particles into diffusive…

天体物理学 · 物理学 2017-08-02 M. E. Dieckmann , A. Meli , P. K. Shukla , L. O. C. Drury , A. Mastichiadis

An object's wake in a plasma with small Debye length that drifts \emph{across} the magnetic field is subject to electrostatic electron instabilities. Such situations include, for example, the moon in the solar wind wake and probes in…

等离子体物理 · 物理学 2015-03-27 I. H. Hutchinson , C. B. Haakonsen , C. Zhou

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

The existence and dynamics of solitons in quasi-one-dimensional Bose-Einstein condensates (BEC) with spin-orbit coupling (SOC) and attractive two-body interactions are described for two coupled atomic pseudo-spin components with slowly and…

量子气体 · 物理学 2018-05-29 Fatkhulla Kh. Abdullaev , Marijana Brtka , Arnaldo Gammal , Lauro Tomio

We analyze a bubble forming system composed of particles with competing long range repulsive and short range attractive interactions driven over a quasi-one-dimensional periodic substrate. We find various pinned and sliding phases as a…

软凝聚态物质 · 物理学 2024-01-26 C. Reichhardt , C. J. O. Reichhardt

The formation of correlated structures is of importance in many diverse contexts such as strongly coupled plasmas, soft matter, and even biological mediums. In all these contexts the dynamics are mainly governed by electrostatic…

等离子体物理 · 物理学 2023-06-07 Mamta Yadav , Priya Deshwal , Srimanta Maity , Amita Das

The propulsion type plasma in oblique external magnetic field is studied in 2D3V PIC MCC simulations. A periodical structure with maxima of electron and ion densities appears with an increase of an obliqueness of magnetic field. These…

等离子体物理 · 物理学 2017-12-06 Irina Schweigert , Michael Keidar

It is argued and demonstrated by particle-in-cell simulations that the synchrotron maser instability could develop at the front of a relativistic, magnetized shock. The instability generates strong low-frequency electromagnetic waves…

天体物理学 · 物理学 2008-11-26 Yuri Lyubarsky

Oblique propagation and head-on collisions of solitary structures is studied in a dense magnetized plasma comprised of relativistic ultra-cold electrons and positrons and positive dynamic ions using conventional extended multi-scales…

太阳与恒星天体物理 · 物理学 2015-05-27 M. Akbari-Moghanjoughi

The possibility of generating stable anisotropic solitons in dipolar Bose-Einstein condensates (BECs) leads to a different scenario not possible in a nondipolar BEC with contact interaction. We study the statics and dynamics of anisotropic…

量子气体 · 物理学 2022-02-04 Luis E. Young-S. , S. K. Adhikari

Fluids with internal microstructure like dense suspensions, biological and polymer added fluids, are commonly found in the turbulent regime in many applications. Their flow is extremely difficult to be studied as microstructure complexity…

流体动力学 · 物理学 2020-11-11 G. Sofiadis , I. E. Sarris

We construct a mean-field model that describes the nonlinear dynamics of a spin-polarized electron gas interacting with fixed, positively-charged ions possessing a magnetic moment that evolves in time. The mobile electrons are modeled by a…

等离子体物理 · 物理学 2025-01-15 Benjamin Bakri , Nicolas Crouseilles , Paul-Antoine Hervieux , Xue Hong , Giovanni Manfredi

The self-organization of dust grains into stable filamentary dust structures (or "chains") largely depends on dynamic interactions between the individual charged dust grains and the complex electric potential arising from the distribution…

We study the vortex-bright solitons in a quasi-two-dimensional spin-orbit-coupled (SO-coupled) hyperfine spin-1 three-component Bose-Einstein condensate (BEC) using variational method and numerical solution of a mean-field model. The ground…

量子气体 · 物理学 2017-01-11 Sandeep Gautam , S. K. Adhikari

Large-amplitude current-driven instabilities in hollow cathode plumes can generate energetic ions responsible for cathode sputtering and spacecraft degradation. A 2D2V (two dimensions each in configuration [D] and velocity [V] spaces)…

等离子体物理 · 物理学 2022-11-22 Wai Hong Ronald Chan , Ken Hara , Jonathan M. Wang , Suhas S. Jain , Shahab Mirjalili , Iain D. Boyd

We study two-dimensional (2D) matter-wave solitons in spinor Bose-Einstein condensates (BECs) under the action of the spin-orbit coupling (SOC) and opposite signs of the self- and cross-interactions. Stable 2D two-component solitons of the…

量子气体 · 物理学 2017-12-01 Yongyao Li , Zhihuan Luo , Yan Liu , Zhaopin Chen , Chunqing Huang , Shenhe Fu , Haishu Tan , Boris A. Malomed

Nonequilibrium condensate systems such as exciton-polariton condensates are capable of supporting a spontaneous vortex nucleation. The spatial inhomogeneity of pumping field or/and disordered potential creates velocity flow fields that may…

统计力学 · 物理学 2010-11-08 Natalia G. Berloff

Electrostatic two-stream instabilities play essential roles in an electrostatic collisionless shock formation. They are a key dissipation mechanism and result in ion heating and acceleration. Since the number and energy of the…

等离子体物理 · 物理学 2021-11-17 Youichi Sakawa , Yutaka Ohira , Rajesh Kumar , Alessio Morace , Leonard N. K. Doehl , Nigel Woolsey