| Original Articles |
|
|
|
|
Effects of Hall Current in the Driven Reconnection with Various Scales |
| YANG Hong-Ang;JIN Shu-Ping |
| School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026 |
|
| Cite this article: |
|
YANG Hong-Ang, JIN Shu-Ping 2004 Chin. Phys. Lett. 21 1394-1397 |
|
|
|
Abstract In the driven reconnection process with various scales, the effect of Hall current is studied numerically using a Hall magnetohydrodynamics (MHD) code derived from a multi-step implicit scheme. In the cases with Lc/di ≤ 1.0 (Lc is the half-thickness of initial current layer, di is the ion inertial length), the features of Hall MHD reconnection are shown as follows: a quasi-steady single X-line reconnection is obtained, the By component with a quadrupolar structure is generated and the maximum reconnection rate is larger than 0.11. In the cases with Lc/di > 1.0, the effect of Hall current on the reconnection dynamics weakens and Hall MHD reconnection is gradually transformed into resistive MHD reconnection as Lc/di increases.
|
| Keywords:
95.30.Qd
52.65.Kj
|
|
|
Published: 01 July 2004
|
|
| PACS: |
95.30.Qd
|
(Magnetohydrodynamics and plasmas)
|
| |
52.65.Kj
|
(Magnetohydrodynamic and fluid equation)
|
|
|
|
|
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
