中文
相关论文

相关论文: The influence of electron density gradient directi…

200 篇论文

In the paper within the approximation of the two-fluid magnetohydrodynamics and geometrooptical approximation the dispersion relation was found for ionacoustic instabilities of the ionospheric plasma at 80-200km altitudes in…

等离子体物理 · 物理学 2009-04-07 Oleg I. Berngardt , Alexander P. Potekhin

We report Magnetospheric Multiscale observations of electron pressure gradient electric fields near a magnetic reconnection diffusion region using a new technique for extracting 7.5 ms electron moments from the Fast Plasma Investigation. We…

Small-scale turbulence originating from microinstabilities limits the energy confinement time in magnetic confinement fusion. Here we develop a semi-analytical dispersion relation based on lowest-order solutions to the gyrokinetic equations…

Electromagnetic streaming instabilities of multicomponent collisional magnetized accretion disks are studied. Sufficiently ionized regions of the disk are explored where there is strong collisional coupling of neutral atoms with both ions…

星系天体物理 · 物理学 2009-11-13 Anatoly Nekrasov

Studies have shown that in sheared $\mathbf{E}\times\mathbf{B}$ flows in an inhomogeneous ionospheric plasma, the gradient drift (GDI) or the Kelvin-Helmholtz (KHI) instability may grow. This work examines the conditions that cause one of…

等离子体物理 · 物理学 2021-06-02 C. Rathod , B. Srinivasan , W. Scales

During periods of strong geomagnetic activity, intense currents flow from the magnetosphere into the high-latitude E-region ionosphere along geomagnetic field lines, B. In this region, collisions between the plasma and neutral molecules…

空间物理 · 物理学 2022-01-05 Yakov S. Dimant , George V. Khazanov , Meers M. Oppenheim

We examine the electron-ion streaming instabilities driven by drift velocities of the order of the electron thermal velocity in a nonmagnetized plasma by one-dimensional electrostatic particle-in-cell code which adopts an ion-to-electron…

太阳与恒星天体物理 · 物理学 2015-06-16 Jun Guo , Bo Li

In this paper we introduce an algebraic form of the dispersion relation for a non ideal inhomogeneous dusty plasma in order to improve drastically the calculation of the drift instability growth rate. This method makes use of the multipole…

等离子体物理 · 物理学 2007-05-23 Carlo Cereceda , Julio Puerta , Pablo Martin , Enrique Castro

We develop a theory of buoyancy instabilities of the electron-ion plasma with the heat flux based on not the MHD equations, but using the multicomponent plasma approach. We investigate a geometry in which the background magnetic field,…

星系天体物理 · 物理学 2010-03-02 Anatoly K. Nekrasov , Mohsen Shadmehri

We develop a general theory of buoyancy instabilities in the electron-ion plasma with the electron heat flux based not upon MHD equations, but using a multicomponent plasma approach in which the momentum equation is solved for each species.…

星系天体物理 · 物理学 2015-05-20 Anatoly K. Nekrasov , Mohsen Shadmehri

Magnetic buoyancy instability plays an important role in the evolution of astrophysical magnetic fields. Here we revisit the problem introduced by \citet{Gilman_1970} of the short wavelength linear stability of a plane layer of compressible…

太阳与恒星天体物理 · 物理学 2015-06-15 K. A. Mizerski , C. R. Davies , D. W. Hughes

Instabilities of ion-acoustic waves in a dusty plasma with electron-drift, collisional, and dust charge fluctuations effects, have been investigated. The regimes are clearly marked out where the theory is applicable. The critical…

等离子体物理 · 物理学 2009-11-06 R. Singh , M. P. Bora

The two-stream instability is a common instability, responsible for many observed phenomena in nature, especially the interaction of jets of various origin with the background plasma (e.g. extragalactic jet interacting with the cosmic…

高能天体物理现象 · 物理学 2015-06-15 Miroslav Horky , Petr Kulhanek

We show that, under Braginskii magneto-hydrodynamics, anti-parallel gradients in average ion charge state and electron temperature can be unstable to the growth of self-generated magnetic fields. The instability is analogous to the…

等离子体物理 · 物理学 2021-02-03 James D. Sadler , Hui Li

We investigate electromagnetic buoyancy instabilities of the electron-ion plasma with the heat flux based on not the magnetohydrodynamic (MHD) equations, but using the multicomponent plasma approach when the momentum equations are solved…

星系天体物理 · 物理学 2015-05-27 Anatoly Nekrasov , Mohsen Shadmehri

Aims: In the present work we investigate the nature of the magnetic Rayleigh-Taylor instability at a density interface permeated by an oblique, homogeneous magnetic field in an incompressible limit. Methods: Using the system of linearised…

太阳与恒星天体物理 · 物理学 2020-02-19 E. Vickers , I. Ballai , R. Erdélyi

Electron-scale Kelvin-Helmholtz instabilities (ESKHI) are found in several astrophysical scenarios. Naturally ESKHI is subject to a background magnetic field, but an analytical dispersion relation and an accurate growth rate of ESKHI under…

等离子体物理 · 物理学 2025-02-25 Yao Guo , Dong Wu , Jie Zhang

By employing a local two-fluid theory, we investigate an obliquely propagating electromagnetic instability in the lower hybrid frequency range driven by cross-field current or relative drifts between electrons and ions. The theory…

天体物理学 · 物理学 2007-05-23 Hantao Ji , Russell Kulsrud , William Fox , Masaaki Yamada

We present turbulent properties of electrostatic drift waves in a nonuniform collisional plasma composed of magnetised electrons and ions in the presence of immobile dust particles. For this purpose, we derive a pair of nonlinear…

等离子体物理 · 物理学 2012-10-19 A. Kendl , P. K. Shukla

We derive and analyze a dispersion relation for the growth rate of collisionless tearing modes, driven by electron inertia and accounting for equilibrium electron temperature anisotropy in a strong guide field regime. For this purpose, a…

等离子体物理 · 物理学 2024-06-19 Camille Granier , Emanuele Tassi , Dario Borgogno , Daniela Grasso
‹ 上一页 1 2 3 10 下一页 ›