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Exploring the statistics of magnetic reconnection X-points in kinetic particle-in-cell turbulence
Journal article   Peer reviewed

Exploring the statistics of magnetic reconnection X-points in kinetic particle-in-cell turbulence

C. C. Haggerty, T. N. Parashar, W. H. Matthaeus, M. A. Shay, Y. Yang, M. Wan, P. Wu, S. Servidio and Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Physics of plasmas, Vol.24(10), 102308
10/01/2017
DOI: 10.1063/1.5001722

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Abstract

Magnetic reconnection is a ubiquitous phenomenon in turbulent plasmas. It is an important part of the turbulent dynamics and heating of space and astrophysical plasmas. We examine the statistics of magnetic reconnection using a quantitative local analysis of the magnetic vector potential, previously used in magnetohydrodynamics simulations, and now employed to fully kinetic particle-in-cell (PIC) simulations. Different ways of reducing the particle noise for analysis purposes, including multiple smoothing techniques, are explored. We find that a Fourier filter applied at the Debye scale is an optimal choice for analyzing PIC data. Finally, we find a broader distribution of normalized reconnection rates compared to the MHD limit with rates as large as 0.5 but with an average of approximately 0.1. Published by AIP Publishing.
Physical Sciences Physics Physics, Fluids & Plasmas Science & Technology

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