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A new quasi-neutral model describing the Weibel instability of a high-current relativistic beam propagating through a resistive plasma is developed. It treats beam electrons as kinetic particles, and ambient plasma as a non-relativistic…

等离子体物理 · 物理学 2009-11-13 Anupam Karmakar , Naveen Kumar , Gennady Shvets , Oleg Polomarov , Alexander Pukhov

The interaction between a wide ultrarelativistic fully-ionized plasma beam and a magnetic barrier is studied numerically. It is assumed that the plasma beam is initially homogeneous and impacts with the Lorentz factor $\Gamma_0\gg 1$ on the…

天体物理学 · 物理学 2015-06-24 V. V. Usov , M. V. Smolsky

Warm dense matter (WDM) is a regime where Fermi degenerate electrons play an important role in the macroscopic properties of a material. Recent experiments have brought us closer to understanding unmagnetized processes in WDM, but…

等离子体物理 · 物理学 2025-02-17 Irem Nesli Erez , Jonathan R. Davies , Jonathan L. Peebles , Riccardo Betti , Pierre-A. Gourdain

Scalar cosmological perturbations of a weakly self-interacting plasma mixed with a perfect radiation fluid are investigated. Effects of this plasma are considered through order $\lambda^{3/2}$ of perturbative thermal-field-theory in the…

广义相对论与量子宇宙学 · 物理学 2011-04-15 Dominik J. Schwarz

High-amplitude, chaotic/turbulent electromagnetic fluctuations are ubiquitous in high-energy-density laboratory and astrophysical plasmas, where they can be excited by various kinetic-streaming and/or anisotropy-driven instabilities, such…

等离子体物理 · 物理学 2015-11-11 Brett D. Keenan , Alexander L. Ford , Mikhail V. Medvedev

The beam-plasma instability, i.e. the response of the plasma bulk to the injection of supra thermal charged-particle beams, results to be appropriately characterized by a long-range interaction system. This physical system hosts a number of…

等离子体物理 · 物理学 2015-06-17 Nakia Carlevaro , Duccio Fanelli , Xavier Garbet , Philippe Ghendrih , Giovanni Montani , Marco Pettini

When two collisionless plasma shells collide, they interpenetrate and the overlapping region may turn Weibel unstable for some values of the collision parameters. This instability grows magnetic filaments which, at saturation, have to block…

等离子体物理 · 物理学 2020-06-03 A Bret , M E Dieckmann

In strong electromagnetic fields, unique plasma phenomena and applications emerge, whose description requires recently developed theories and simulations [Y. Shi, Ph.D. thesis, Princeton University (2018)]. In the classical regime, to…

等离子体物理 · 物理学 2021-04-21 Yuan Shi , Hong Qin , Nathaniel J. Fisch

In this letter, we report the presence of novel type of plasmon Weyl points in a naturally existing material - magnetized plasma. In such a medium, conventional, purely longitudinal bulk plasma oscillations exists only along the direction…

光学 · 物理学 2016-10-04 Wenlong Gao , Biao Yang , Mark Lawrence , Fengzhou Fang , Benjamin Béri , Shuang Zhang

We propose that pressure anisotropy causes weakly collisional turbulent plasmas to self-organize so as to resist changes in magnetic-field strength. We term this effect "magneto-immutability" by analogy with incompressibility (resistance to…

高能天体物理现象 · 物理学 2019-02-27 Jonathan Squire , Alexander A. Schekochihin , Eliot Quataert , Matthew W. Kunz

The fraction of heavy vector mesons detected after a heavy ion collision provides information about the possible formation of a plasma state. An interesting framework for estimating the degree of dissociation of heavy mesons in a plasma is…

高能物理 - 唯象学 · 物理学 2018-08-01 Nelson R. F. Braga , Luiz F. Ferreira

The unique plasma-specific features and physical phenomena in the organization of nanoscale solid-state systems in a broad range of elemental composition, structure, and dimensionality are critically reviewed. These effects lead to the…

等离子体物理 · 物理学 2013-07-01 K. Ostrikov , E. C. Neyts , M. Meyyappan

It is shown, that at weakly nonlinear interaction of waves are possible as modes with chaotic dynamics, and with increasing degree of coherence. Conditions are found at which they arise. One of the types of such interaction is decays. The…

混沌动力学 · 物理学 2012-10-26 Vyacheslav Buts , Igor Kovalchuk , Dmytro Tarasov , Alexander Tolstoluzhsky

In an inhomogeneous magnetised plasma the transport of energy and particles perpendicular to the magnetic field is in general mainly caused by quasi two-dimensional turbulent fluid mixing. The physics of turbulence and structure formation…

等离子体物理 · 物理学 2010-03-05 Alexander Kendl

Motivated by electromagnetic-field confinement due to plasma near accreting black holes, we continue our exploration of the linear dynamics of an electromagnetic field propagating in curved spacetime in the presence of plasma by including…

广义相对论与量子宇宙学 · 物理学 2021-12-01 Enrico Cannizzaro , Andrea Caputo , Laura Sberna , Paolo Pani

Plasma in the earth's magnetosphere is subjected to compression during geomagnetically active periods and relaxation in subsequent quiet times. Repeated compression and relaxation is the origin of much of the plasma dynamics and…

等离子体物理 · 物理学 2020-08-19 Gurudas Ganguli , Chris Crabtree , Alex Fletcher , Bill Amatucci

The onset and evolution of magnetic fields in laboratory and astrophysical plasmas is determined by several mechanisms, including instabilities, dynamo effects and ultra-high energy particle flows through gas, plasma and interstellar-media.…

等离子体物理 · 物理学 2015-05-20 A. Flacco , J. Vieira , A. Lifschitz , F. Sylla , S. Kahaly , M. Veltcheva , L. O. Silva , V. Malka

In strong electromagnetic fields, new plasma phenomena and applications emerge, whose modeling requires analytical theories and numerical schemes that I will develop in this thesis. Based on my new results of the classical plasma model, the…

等离子体物理 · 物理学 2018-08-21 Yuan Shi

We study the effects of plasma \b{eta} (ratio of plasma pressure to magnetic pressure) on the evolution of kinetic plasma turbulence using fully kinetic particle-in-cell simulations of decaying turbulence. We find that the plasma \b{eta}…

空间物理 · 物理学 2018-09-19 Tulasi N. Parashar , William H. Matthaeus , Michael A Shay

This paper has two main parts. The first one presents a direct path from microscopic dynamics to Debye screening, Landau damping and collisional transport. It shows there is more simplicity in microscopic plasma physics than previously…

等离子体物理 · 物理学 2014-03-05 Dominique Escande