Fast magnetic reconnection with large guide fields
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
We domonstrate, using two-fluid simulations, that low-βmagnetic reconnection remains fast, regardless of the presence of fast dispersive waves, which have been previously suggested to play a critical role. In order to understand these results, a discrete model is constructed that offers scaling relationships for the reconnection rate and dissipation region (DR) thickness in terms of the upstream magnetic field and DR length. Moreover, we verify these scalings numerically and show how the DR self-adjusts to process magnetic flux at the same rate that it is supplied to a larger region where two-fluid effects become important. The rate is therefore independent of the DR physics and is in good agreement with kinetic results.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Fusion Energy Sciences (FES)
- Grant/Contract Number:
- AC52-06NA25396
- OSTI ID:
- 1291213
- Alternate ID(s):
- OSTI ID: 1228480
- Report Number(s):
- LA-UR-15-20009; PHPAEN
- Journal Information:
- Physics of Plasmas, Vol. 22, Issue 1; ISSN 1070-664X
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Why does steady-state magnetic reconnection have a maximum local rate of order 0.1? | text | January 2016 |
A scalable, fully implicit algorithm for the reduced two-field low-β extended MHD model
|
journal | December 2016 |
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