Influence of the lower hybrid drift instability on the onset of magnetic reconnection
نویسندگان
چکیده
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منابع مشابه
Measurement of lower-hybrid drift turbulence in a reconnecting current sheet.
We present a detailed study of fluctuations in a laboratory current sheet undergoing magnetic reconnection. The measurements reveal the presence of lower-hybrid-frequency-range fluctuations on the edge of current sheets produced in the magnetic reconnection experiment (MRX). The measured fluctuation characteristics are consistent with theoretical predictions for the lower-hybrid drift instabili...
متن کاملNonlinear evolution of the lower-hybrid drift instability in a current sheet.
The lower-hybrid drift instability is simulated in an ion-scale current sheet using a fully kinetic approach with values of the ion to electron mass ratio up to m(i)/m(e)=1836. Although the instability is localized on the edge of the layer, the nonlinear development increases the electron flow velocity in the central region resulting in a strong bifurcation of the current density and significan...
متن کاملبررسی شتابدهی ذرات باردار از طریق بازاتصالی مغناطیسی در محیطهای پلاسمایی
Magnetic reconnection, which occurs in high conducting plasmas, changes the topology of magnetic field lines and converts magnetic energy into the kinetic and thermal energy of plasma and also accelerates charged particles. This phenomenon plays an important role in changing the dynamic of laboratory and space plasmas such as fusion tokamaks and sun’s corona. The electric and magnetic fields ge...
متن کاملThe onset of turbulence in collisionless magnetic reconnection
Two dimensional simulations of collisionless magnetic reconnection produce strong gradients in the current and plasma profiles near the magnetic X-line and along the separatrix during the nonlinear phase. Here we present 3D two-fluid MHD simulations of reconnection that show these sharp gradients break up due to the onset of secondary instabilities, leading to a strongly turbulent configuration...
متن کاملPPPL-3708_Cover copy
The role of turbulence in the process of magnetic reconnection has been the subject of a great deal of study and debate in the theoretical literature. At issue in this debate is whether turbulence is essential for fast magnetic reconnection to occur in collisionless current sheets. Some theories claim it is necessary in order to provide anomalous resistivity, while others present a laminar fast...
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