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Title: Conversion of magnetic energy in the magnetic reconnection layer of a laboratory plasma

Journal Article · · Nature Communications
DOI:https://doi.org/10.1038/ncomms5774· OSTI ID:1179779
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  1. Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States). Center for Magnetic Self-Organization

Magnetic reconnection, in which magnetic field lines break and reconnect to change their topology, occurs throughout the universe. The essential feature of reconnection is that it energizes plasma particles by converting magnetic energy. Despite the long history of reconnection research, how this energy conversion occurs remains a major unresolved problem in plasma physics. Here we report that the energy conversion in a laboratory reconnection layer occurs in a much larger region than previously considered. The mechanisms for energizing plasma particles in the reconnection layer are identified, and a quantitative inventory of the converted energy is presented for the first time in a well defined reconnection layer; 50% of the magnetic energy is converted to particle energy, 2/3 of which transferred to ions and 1/3 to electrons. Our results are compared with simulations and space measurements, for a key step toward resolving one of the most important problems in plasma physics.

Research Organization:
Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Fusion Energy Sciences (FES)
Grant/Contract Number:
AC02-09CH11466
OSTI ID:
1179779
Report Number(s):
PPPL-5050; ncomms5774; TRN: US1600648
Journal Information:
Nature Communications, Vol. 5; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 117 works
Citation information provided by
Web of Science

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Explosive Magnetotail Activity journal May 2019
Magnetic Reconnection in the Space Sciences: Past, Present, and Future journal January 2020
Effective Resistivity in Collisionless Magnetic Reconnection journal July 2018
Understanding the dynamics and energetics of magnetic reconnection in a laboratory plasma: Review of recent progress on selected fronts journal May 2016
Turbulent heating due to magnetic reconnection journal January 2018
Turbulence-driven anisotropic electron tail generation during magnetic reconnection journal May 2018
An experimental platform for pulsed-power driven magnetic reconnection journal May 2018
An intuitive two-fluid picture of spontaneous 2D collisionless magnetic reconnection and whistler wave generation journal May 2018
Laboratory space physics: Investigating the physics of space plasmas in the laboratory journal May 2018
Electromagnetic fluctuations during guide field reconnection in a laboratory plasma journal May 2018
Detection of anisotropy in the electron velocity distribution produced by electron cyclotron resonance heating using the polarization of helium atom emission lines journal May 2018
The reduction of magnetic reconnection outflow jets to sub-Alfvénic speeds journal October 2018
Energy transfer and electron energization in collisionless magnetic reconnection for different guide-field intensities journal December 2018
Study of a magnetically driven reconnection platform using ultrafast proton radiography journal June 2019
Dependence of the pickup-like ion effective heating on the poloidal and toroidal magnetic fields during magnetic reconnection journal October 2019
Particle simulation studies of merging processes of two spherical-tokamak-type plasmoids journal September 2019
Investigation of merging/reconnection heating during solenoid-free startup of plasmas in the MAST Spherical Tokamak journal April 2017
High-energy neutrino emission from the core of low luminosity AGNs triggered by magnetic reconnection acceleration journal November 2015
A magnetic reconnection model for explaining the multiwavelength emission of the microquasars Cyg X-1 and Cyg X-3 journal March 2015
The role of electron heating physics in images and variability of the Galactic Centre black hole Sagittarius A* journal June 2018
Perspectives on magnetic reconnection journal December 2016
Multi-Scale Kinetic Simulation of Magnetic Reconnection With Dynamically Adaptive Meshes journal October 2018
Fast Magnetic Reconnection: “Ideal” Tearing and the Hall Effect journal August 2017
A Parametric Study of the Structure of Hall Magnetic Field Based on Kinetic Simulations. I. Anti-parallel Magnetic Reconnection in an Asymmetric Current Sheet journal June 2019
A Parametric Study of the Structure of Hall Magnetic Field Based on Kinetic Simulations. II. Asymmetric Magnetic Reconnection with a Guide Field journal September 2019
On the Observations of Rapid Forced Reconnection in the Solar Corona journal December 2019
Characterizing Magnetic Reconnection Regions Using Gaussian Mixture Models on Particle Velocity Distributions journal January 2020
Fast Ion Heating in Transient Collisionless Magnetic Reconnection via an Intrinsic Stochastic Mechanism journal November 2018
On the Energy Conversion Rate during Collisionless Magnetic Reconnection journal September 2019
A magnetic reconnection model for explaining the multi-wavelength emission of the microquasars Cyg X-1 and Cyg X-3 text January 2014
The role of fast magnetic reconnection on the radio and gamma-ray emission from the nuclear regions of microquasars and low luminosity AGNs text January 2014
Fast Magnetic Reconnection: "Ideal" Tearing and the Hall Effect text January 2017
Laboratory Space Physics: Investigating the Physics of Space Plasmas in the Laboratory text January 2018
The role of electron heating physics in images and variability of the Galactic Centre black hole Sagittarius A* text January 2018
Energy transfer and electron energization in collisionless magnetic reconnection for different guide-field intensities text January 2018