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26 April 2024 |
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Article overview
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Interplay of Biermann-battery and magnetic reconnection in 3-D colliding laser plasmas | | Jackson Matteucci
; Will Fox
; Amitava Bhattacharjee
; Derek Schaeffer
; Clement Moissard
; Kai Germaschewski
; Gennady Fiksel
; Suxing Hu
; | | Date: |
24 Oct 2017 | | Abstract: | Recent experiments have demonstrated magnetic reconnection between colliding
plasma plumes, where the reconnecting magnetic fields were self-generated in
the plasma by the Biermann battery effect. Using fully kinetic 3-D simulations,
we show the full evolution of the magnetic fields and plasma in these
experiments, including self-consistent magnetic field generation via the
Biermann battery effect, evolution and advection of the field with the
expanding plasmas. Collision of the two plasmas drives the formation of a
magnetic reconnection current sheet, where reconnection occurs in a strongly
time-and-space-dependent manner, demonstrating new 3-D reconnection mechanisms.
At early times, we observe fast, vertically-localized Biermann-mediated
reconnection, an inherently 3-D reconnection mechanism where localized heating
in the reconnection layer coupled with the ablation density profile conspires
to break field lines, reconnecting them downstream. At late times, fast
reconnection is sustained by both the collionless pressure tensor and
Biermann-mediated reconnection. | | Source: | arXiv, 1710.8556 | | Services: | Forum | Review | PDF | Favorites | |
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