Brief Communication: The double layer in the separatrix region during magnetic reconnection
With two-dimensional (2-D) particle-in-cell (PIC) simulations we investigate the evolution of the double layer (DL) driven by magnetic reconnection. Our results show that an electron beam can be generated in the separatrix region as magnetic reconnection proceeds. This electron beam could trigger th...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2015-03-01
|
| Series: | Nonlinear Processes in Geophysics |
| Online Access: | http://www.nonlin-processes-geophys.net/22/167/2015/npg-22-167-2015.pdf |
| Summary: | With two-dimensional (2-D) particle-in-cell (PIC) simulations
we investigate the evolution of the double layer (DL) driven by magnetic
reconnection. Our results show that an electron beam can be generated in the
separatrix region as magnetic reconnection proceeds. This electron beam
could trigger the ion-acoustic instability; as a result, a DL
accompanied with electron holes (EHs) can be found during the nonlinear evolution
stage of this instability. The spatial size of the DL is about 10
Debye lengths. This DL propagates along the magnetic field at a
velocity of about the ion-acoustic speed, which is consistent with the
observation results. |
|---|---|
| ISSN: | 1023-5809 1607-7946 |