Energetics of kinetic reconnection in a three-dimensional null points cluster

Abstract

We performed three-dimensional Particle-in-Cell simulations of magnetic reconnection with multiple magnetic null points. Magnetic field energy conversion into kinetic energy was about five times higher than in traditional Harris sheet configuration. More than 85% of initial magnetic field energy was transferred to particle energy during 25 reversed ion cyclofrequencies. Magnetic reconnection in the cluster of null points evolved in three phases. During the first phase, ion beams were excited, that then gave part of their energy back to magnetic field in the second phase. In the third phase, magnetic reconnection occurs in many small patches around the current channels formed along the stripes of low magnetic field. Magnetic reconnection in null points presents essentially three-dimensional features, with no two dimensional symmetries or current sheets.

References in corpus (3)

• New Measure of the Dissipation Region in Collisionless Magnetic Reconnection
• Self-Feeding Turbulent Magnetic Reconnection on Macroscopic Scales
• Particle-In-Cell Simulation of Electron Acceleration in Solar Coronal Jets

Cited by in corpus (7)

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• Magnetic null points in kinetic simulations of space plasmas
• Multi-GPU Acceleration of the iPIC3D Implicit Particle-in-Cell Code
• Magnetic nulls in interacting dipolar fields
• Role of Z-pinches in magnetic reconnection in space plasmas