Numerical simulations of plasma equilibrium in a one-dimensional current sheet with a nonzero normal magnetic field component

2007 ◽  
Vol 33 (11) ◽  
pp. 942-955 ◽  
Author(s):  
O. V. Mingalev ◽  
I. V. Mingalev ◽  
Kh. V. Malova ◽  
L. M. Zelenyi
Keyword(s):  
Magnetic Field ◽  
Numerical Simulations ◽  
Current Sheet ◽  
Field Component ◽  
Magnetic Field Component ◽  
Plasma Equilibrium ◽  
One Dimensional ◽  
Normal Magnetic Field

scholarly journals MHD aspect of current sheet oscillations related to magnetic field gradients

2009 ◽  
Vol 27 (1) ◽  
pp. 417-425 ◽  
Author(s):  
N. V. Erkaev ◽  
V. S. Semenov ◽  
I. V. Kubyshkin ◽  
M. V. Kubyshkina ◽  
H. K. Biernat
Keyword(s):  
Magnetic Field ◽  
Current Sheet ◽  
Field Component ◽  
Short Wave ◽  
Magnetic Field Component ◽  
Wave Number ◽  
Dispersion Function ◽  
Small Scale ◽  
Magnetic Field Gradients ◽  
Normal Magnetic Field

Abstract. One-fluid ideal MHD model is applied for description of current sheet flapping disturbances appearing due to a gradient of the normal magnetic field component. The wave modes are studied which are associated to the flapping waves observed in the Earth's magnetotail current sheet. In a linear approximation, solutions are obtained for model profiles of the electric current and plasma densities across the current sheet, which are described by hyperbolic functions. The flapping eigenfrequency is found as a function of wave number. For the Earth's magnetotail conditions, the estimated wave group speed is of the order of a few tens kilometers per second. The current sheet can be stable or unstable in dependence on the direction of the gradient of the normal magnetic field component. The obtained dispersion function is used for calculation of the flapping wave disturbances, which are produced by the given initial Gaussian perturbation at the center of the current sheet and propagating towards the flanks. The propagating flapping pulse has a smooth leading front, and a small scale oscillating trailing front, because the short wave oscillations propagate much slower than the long wave ones.

Asymmetric configurations of a thin current sheet with a constant normal magnetic field component

2009 ◽  
Vol 35 (1) ◽  
pp. 76-83 ◽  
Author(s):  
O. V. Mingalev ◽  
I. V. Mingalev ◽  
Kh. V. Malova ◽  
L. M. Zelenyi ◽  
A. V. Artem’ev
Keyword(s):  
Magnetic Field ◽  
Current Sheet ◽  
Field Component ◽  
Magnetic Field Component ◽  
Thin Current Sheet ◽  
Normal Magnetic Field

Effects of the axial magnetic field component on the electron trajectory in the wiggler section

1998 ◽  
Vol 34 (5) ◽  
pp. 3467-3470
Author(s):  
A.C.C. Migliano ◽  
A.C.J. Paes ◽  
Y.C. De Polli ◽  
C.R.S. Stopa ◽  
J.R. Cardoso
Keyword(s):  
Magnetic Field ◽  
Field Component ◽  
Axial Magnetic Field ◽  
Magnetic Field Component ◽  
Electron Trajectory
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