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Reconnection Rate in Collisionless Magnetic Reconnection under Open Boundary Conditions |
| HUANG Jun1;MA Zhi-Wei2 |
| 1CAS Key Laboratory of Basic Plasma Physics, School of Science, University of Science and Technology of China, Hefei 2300262Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031 |
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| Cite this article: |
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HUANG Jun, MA Zhi-Wei 2008 Chin. Phys. Lett. 25 1764-1767 |
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Abstract Collisionless magnetic reconnection is studied by using two-dimensional
Darwin particle-in-cell simulations with different types of open boundary conditions. The simulation results indicate that reconnection rates are strongly dependent on the imposed boundary conditions of the magnetic field Bx in the inward side. Under the zero-gradient Bx boundary condition, the reconnection rate quickly decreases after reaching its maximum and no steady-state is found. Under both electromagnetic and magnetosonic boundary conditions, the system can reach a quasi-steady state. However, the reconnection rate Er≈0.08 under the electromagnetic boundary condition
is weaker than Er≈0.13 under the magnetosonic boundary condition.
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| Keywords:
52.35.Vd
52.65.Rr
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Received: 23 February 2008
Published: 29 April 2008
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