Ion Acceleration in Driven Magnetic Reconnection during High-energy-Density Plasma Interaction

Peera Pongkitiwanichakul, William Fox, David Ruffolo, Kittipat Malakit, Kirill V. Lezhnin, Jack Matteucci, Amitava Bhattacharjee

Research output: Contribution to journalArticlepeer-review

Abstract

Strongly driven magnetic reconnection occurs in astrophysical events and also in laboratory experiments with laser-produced plasma. We have performed 2.5D particle-in-cell simulations of collisions of two high-energy-density plasmas resulting in strongly driven magnetic reconnection that demonstrates significant non-thermal ion acceleration. Such acceleration is significant only when the plasma beta is sufficiently low that the Alfvén speed at the reconnection inflow exceeds the thermal speed. Under these conditions, the most energetic ions are primarily accelerated by the Hall electric field in the reconnection outflow, especially at the trailing edge of an emerging plasmoid in the outflow. Laboratory experiments in the near future should be able to confirm these predictions and their applicability to astrophysical situations.

Original languageEnglish (US)
Article number86
JournalAstrophysical Journal
Volume907
Issue number2
DOIs
StatePublished - Feb 1 2021

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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