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The effect of small deviations from a Maxwellian equilibrium on turbulent momentum transport in tokamak plasmas is considered. These non-Maxwellian features, arising from diamagnetic effects, introduce a strong dependence of the radial flux…

Plasma Physics · Physics 2013-08-09 M. Barnes , F. I. Parra , J. P. Lee , E. A. Belli , M. F. F. Nave , A. E. White

Under the presence of strong electromagnetic fields and radiation reaction, plasmas develop anisotropic momentum distributions, characterized by a population inversion. This is a general property of collisionless plasmas when the radiation…

Plasma Physics · Physics 2023-05-03 Pablo J. Bilbao , Luis O. Silva

We study weak gravitational lensing around a compact object with arbitrary quadrupole moment in the presence of plasma. The studied compact objects are considered to be spherically symmetric. The additional parameter $\epsilon$ regulating…

General Relativity and Quantum Cosmology · Physics 2018-07-16 Hrishikesh Chakrabarty , Askar B. Abdikamalov , Ahmadjon A. Abdujabbarov , Cosimo Bambi

In a rotating magnetized plasma cylinder with shear, cross-field current can arise from inertial mechanisms and from the cross-field viscosity. Considering these mechanisms, it is possible to calculate the irreducible radial current draw in…

Plasma Physics · Physics 2019-08-30 E. J. Kolmes , I. E. Ochs , M. E. Mlodik , J. -M. Rax , R. Gueroult , N. J. Fisch

All experiments, which have been proposed so far to model the magnetorotational instability (MRI) in the laboratory, involve a Couette flow of liquid metals in a rotating annulus. All liquid metals have small magnetic Prandtl numbers, Pm,…

Astrophysics · Physics 2009-11-10 Koichi Noguchi , Vladimir I. Pariev

We have developed a relativistic model for pulsar radio emission and polarization by taking into account of detailed geometry of emission region, rotation and modulation. The sparks activity on the polar cap leads to plasma columns in the…

High Energy Astrophysical Phenomena · Physics 2015-06-03 D. Kumar , R. T. Gangadhara

The polarization plane rotation angle of probe signal in plasma is calculated. The estimates of the residual gas average density and the average magnitude of the magnetic field in a cesium plasma based on the effects of Faraday and…

Plasma Physics · Physics 2022-07-19 Koryun B. Oganesyan , Krzysztof Dzierdzega , Peter Kopcansky

It is shown that at finite temperature and in the presence of magnetic sources magnetic fields are screened. This is proven within the framework of classical transport theory both for the Abelian and non-Abelian plasmas. Magnetic screening…

High Energy Physics - Phenomenology · Physics 2009-10-30 Cristina Manuel

We present the results of a 2-D, two fluid (ions and neutrals) simulation of the ambipolar filamentation process, in which a magnetized, weakly ionized plasma is stirred by turbulence in the ambipolar frequency range. The higher turbulent…

Astrophysics · Physics 2007-05-23 M. Franqueira , M. Tagger , A. I. Gomez de Castro

Using the Galaxy as an example, we study the effect of j x B force on the rotational curves of gas and plasma in galaxies. Acceptable model for the galactic magnetic field and plausible physical parameters are used to fit the flat…

Astrophysics · Physics 2011-06-21 D. Tsiklauri

First experimental measurements are presented for the kink instability in a linear plasma column which is insulated from an axial boundary by finite sheath resistivity. Instability threshold below the classical Kruskal-Shafranov threshold,…

Plasma Physics · Physics 2009-11-13 I. Furno , T. P. Intrator , S. Abbate , T. Madziwa-Nussinov , A. Light , L. Dorf , G. Lapenta , D. D. Ryutov

An experiment for studying laser self-guiding has been carried out for the high power ultrashort pulse laser interaction with an underdense plasma slab. Formation of an extremely long plasma channel and its bending are observed when the…

Axial plugging is a critical challenge for fusion in open-ended magnetic confinement systems. Multi-mirror systems, consisting of a series of axially aligned magnetic mirrors, aim to enhance axial confinement by increasing the effective…

Plasma Physics · Physics 2026-03-09 Tal Miller , Eli Gudinetsky , Ilan Be'ery , Ido Barth

Different ray paths through a turbulent plasma can produce stochastic Faraday rotation leading to depolarization of any linearly polarized component. Simple theory predicts that the average values of the Stokes parameters decay according to…

Astrophysics · Physics 2009-10-30 D. B. Melrose , J. -P. Macquart

A self-propelled particle in a two-dimensional axisymmetric system, such as a particle in a central force field or confined in a circular region, may show rotational or oscillatory motion. These motions do not require asymmetry of the…

Pattern Formation and Solitons · Physics 2015-07-09 Yuki Koyano , Natsuhiko Yoshinaga , Hiroyuki Kitahata

Particularly for aneutronic fusion schemes, it is advantageous to manipulate the fuel species differently from one another, as well as expel ash promptly. The ponderomotive effect can be used to selectively manipulate particles. It is…

Plasma Physics · Physics 2025-02-05 Tal Rubin , Nathaniel J. Fisch

Recent work has shown that synchrotron emission from relativistic plasmas leads the electron distribution to form an anisotropic ring in momentum space, which can be unstable to both kinetic and hydrodynamic instabilities. Fundamental to…

Plasma Physics · Physics 2024-07-19 Ian E. Ochs

The charging of spinning insulating objects by plasma and photoemission is studied with the particle-in-cell method. Unidirectional photon flux, different angular velocities of the object, and different plasma flow speeds are considered.…

Plasma Physics · Physics 2009-02-16 W J Miloch , S V Vladimirov

We investigate the rotation of the polarization of a light ray propagating in the gravitational field of a circularly polarized laser beam. The rotation consists of a reciprocal part due to gravitational optical activity, and a…

General Relativity and Quantum Cosmology · Physics 2020-01-08 Fabienne Schneiter , Dennis Rätzel , Daniel Braun

When a cylindrically-symmetric magnetized plasma compresses or expands, velocity-space anisotropy is naturally generated as a result of the different adiabatic conservation laws parallel and perpendicular to the magnetic field. When the…

Plasma Physics · Physics 2023-05-18 Ian E. Ochs , Nathaniel J. Fisch
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