Document Type : Original Article
Author
Associate Professor in Physics/ Faculty of Physics/University of Tabriz
Abstract
In this study, using two-dimensional magnetohydrodynamic simulation, we investigate the interaction of an electron beam with the reconnection process of the magnetic field. Magnetic reconnection is a fundamental process in laboratory and space plasma environments, specific to the solar atmosphere region, which by changing the geometric arrangement of magnetic field lines leads to the release of magnetic energy into kinetic energy, heat and acceleration of charged particles. The results of our simulations show that the reconnection that starts from an X-like magnetic null-point becomes more faster over time and the electric current sheet becomes more elongated. At the same time, the beam electrons are drawn towards the reconnection area and get stuck between the current layer, while they also move along the current layer, but at the return points, the particle velocity component perpendicular to the current layer becomes zero. Over time, the divergence in the beam increases and the distribution function of the particle velocity becomes more diffuse and more complex. Especially, the particles accelerate in the z-direction and move away from the layer. Therefore, the interaction of an electron beam with the magnetic reconnection process has a fundamental effect on the dynamics of the beam, and finally the beam loses its identity due to complete divergence.
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