A model of one-dimensional current sheet with parallel currents and normal component of magnetic field

Artemyev, A. V.
February 2011
Physics of Plasmas;Feb2011, Vol. 18 Issue 2, p022104
Academic Journal
We develop a model of a current sheet including field-aligned currents and a finite value of the normal component of magnetic field. The model is based on the conservation of a quasiadiabatic invariant of ion motion, while for electrons a fluid approach is used. A part of the current becomes parallel to the magnetic field due to the magnetic field shear, however the perpendicular component of the current is also present. The difference in the plasma pressure between the current sheet center and its boundaries decreases is only half of the value of the model free of parallel currents. We discuss the possible application of the model developed in this paper.


Related Articles

  • Magnetohydrodynamic counter-rotating vortices and synergetic stabilizing effects of magnetic field and plasma flow. Throumoulopoulos, G. N.; Tasso, H. // Physics of Plasmas;Mar2010, Vol. 17 Issue 3, p032508 

    A nonlinear two-dimensional steady state solution in the framework of hydrodynamics describing a row of periodic counter-rotating vortices is extended to the magnetohydrodynamic (MHD) equilibrium equation with incompressible flow of arbitrary direction. The extended solution covers a variety of...

  • Offset reduction in Hall effect measurements using a nonswitching van der Pauw technique. Riss, O.; Shaked, E.; Karpovsky, M.; Gerber, A. // Review of Scientific Instruments;Jul2008, Vol. 79 Issue 7, p073901 

    A nonswitching van der Pauw technique, which uses two electrically isolated alternating current sources operating at two different frequencies and two lock-in amplifiers, is suggested for Hall effect measurements. Parasitic offset voltage, typical for this type of measurements, is reduced by...

  • The effect of viscosity on the resistive tearing mode with the presence of shear flow. Chen, X. L.; Morrison, P. J. // Physics of Fluids B: Plasma Physics;Nov90, Vol. 2 Issue 11, p2575 

    The effect of small viscosity on the ‘‘constant ψ’’ tearing mode in the presence of shear flow is analyzed using the boundary-layer approach. It is found that the influence of viscosity depends upon the parameter G’(0)/F’(0), where G’(0) and...

  • Nonlinear saturation of ideal interchange modes in a sheared magnetic field. Beklemishev, A. D. // Physics of Fluids B: Plasma Physics;Jun91, Vol. 3 Issue 6, p1425 

    Pressure-driven ideal modes cannot completely interchange flux tubes of a sheared magnetic field; instead, they saturate, forming new helical equilibria. These equilibria are studied both analytically and numerically with reduced magnetohydrodynamic equations in a flux-conserving Lagrangian...

  • Effect of Electron and Optical Factors on the Beam Extraction Coefficient of Large-Area Electron Accelerators. Abroyan, M. A.; Zuev, Yu. V.; Kosogorov, S. L.; Shvedyuk, V. Ya. // Technical Physics;Aug2003, Vol. 48 Issue 8, p1035 

    A combined numerical-analytical model for the electron-optical system of a large-area accelerator is suggested. The model is used to analyze various electron and optical factors that affect the beam extraction coefficient. To find ways of improving the beam extraction coefficient, the spatial...

  • Dynamical invariants and manipulation of electron spin in a quantum dot. Ivanov, Aleksander; Ivanov, Aleksey // Vestnik IKBFU;2013, Issue 4, p7 

    In this paper we discuss electrical manipulation of a spin an electron in quantum dot within a weak magnetic field. Approach to describing this process is based on Lewis -- Riesenfeld dynamical invariants. Necessary conditions of a spin-flip process are derived.

  • Magnetic field correlations in random flow with strong steady shear. Kolokolov, I.; Lebedev, V.; Sizov, G. // Journal of Experimental & Theoretical Physics;Aug2011, Vol. 113 Issue 2, p339 

    We analyze the magnetic kinematic dynamo in a conducting fluid where a stationary shear flow is accompanied by relatively weak random velocity fluctuations. The diffusionless and diffusion regimes are described. The growth rates of the magnetic field moments are related to the statistical...

  • Reflection and Ducting of Gravity Waves Inside the Sun. MacGregor, K.; Rogers, T. // Solar Physics;Jun2011, Vol. 270 Issue 2, p417 

    Internal gravity waves excited by overshoot at the bottom of the convection zone can be influenced by rotation and by the strong toroidal magnetic field that is likely to be present in the solar tachocline. Using a simple Cartesian model, we show how waves with a vertical component of...

  • Extended fluid models: Pressure tensor effects and equilibria. Cerri, S. S.; Henri, P.; Califano, F.; Del Sarto, D.; Faganello, M.; Pegoraro, F. // Physics of Plasmas;Nov2013, Vol. 20 Issue 11, p112112 

    We consider the use of 'extended fluid models' as a viable alternative to computationally demanding kinetic simulations in order to manage the global large scale evolution of a collisionless plasma while accounting for the main effects that come into play when spatial micro-scales of the order...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics