Please use this identifier to cite or link to this item:
http://arks.princeton.edu/ark:/88435/dsp01sj1395028
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Jara-Almonte, J. | - |
dc.contributor.author | Murphy, N.A. | - |
dc.contributor.author | Ji, H. | - |
dc.date.accessioned | 2021-03-29T13:56:02Z | - |
dc.date.available | 2021-03-29T13:56:02Z | - |
dc.date.issued | 2021 | - |
dc.identifier.uri | http://arks.princeton.edu/ark:/88435/dsp01sj1395028 | - |
dc.description.abstract | Magnetic reconnection in partially ionized plasmas is a ubiquitous and important phenomena in both laboratory and astrophysical systems. Here, simulations of partially ionized magnetic reconnection with well-matched initial conditions are performed using both multi-fluid and fully-kinetic approaches. Despite similar initial conditions, the time-dependent evolution differs between the two models. In multi-fluid models, the reconnection rate locally obeys either a decoupled Sweet-Parker scaling, where neutrals are unimportant, or a fully coupled Sweet-Parker scaling, where neutrals and ions are strongly coupled, depending on the resistivity. In contrast, kinetic models show a faster reconnection rate that is proportional to the fully-coupled, bulk Alfv\'en speed, $v_A^\star$. These differences are interpreted as the result of operating in different collisional regimes. Multi-fluid simulations are found to maintain $\nu_{ni}L/v_A^\star \gtrsim 1$, where $\nu_{ni}$ is the neutral-ion collision frequency and $L$ is the time-dependent current sheet half-length. This strongly couples neutrals to the reconnection outflow, while kinetic simulations evolve to allow $\nu_{ni}L/v_A^\star < 1$, decoupling neutrals from the reconnection outflow. Differences in the way reconnection is triggered may explain these discrepancies. | en_US |
dc.language.iso | en_US | en_US |
dc.publisher | Princeton Plasma Physics Laboratory, Princeton University | en_US |
dc.subject | Magnetic reconnection | en_US |
dc.subject | Partially ionized plasmas | en_US |
dc.title | Multi-Fluid and Kinetic Models of Partially Ionized Magnetic Reconnection | en_US |
dc.type | Dataset | en_US |
pu.projectgrantnumber | 31016 G0001 10003086 101 | - |
pu.depositor | Stratton, Brent | - |
dc.contributor.funder | U. S. Department of Energy contract number DE-AC02-09CH11466 | en_US |
Appears in Collections: | Plasma Science & Technology |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
hifi_rate.csv | 460.38 kB | CSV | View/Download | |
slice_data.h5 | 3.92 MB | h5 | View/Download | |
elastic_cross_sections.csv | 177.99 kB | CSV | View/Download | |
data.csv | 13.21 kB | CSV | View/Download | |
vpic_rate.csv | 9.44 kB | CSV | View/Download | |
README.txt | 290 B | Text | View/Download |
Items in Dataspace are protected by copyright, with all rights reserved, unless otherwise indicated.