skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Nonthermal ion acceleration by the kink instability in nonrelativistic jets

Journal Article · · Physics of Plasmas
DOI:https://doi.org/10.1063/1.5098478· OSTI ID:1560646

We investigate the self-consistent particle acceleration physics associated with the development of the kink instability (KI) in nonrelativistic, electron-ion plasma jets. Using 3D fully kinetic particle-in-cell simulations, we show that the KI efficiently converts the initial toroidal magnetic field energy into energetic ions. The accelerated ions form a nonthermal power-law tail in the energy spectrum, containing ≃10% of the initial magnetic field energy, with the maximum ion energy extending to the confinement energy of the jet. We find that the ions are efficiently accelerated by the concerted action of the motional electric field and the highly tangled magnetic field that develop in the nonlinear phase of the KI: fast curvature drift motions of ions across magnetic field lines enable their acceleration along the electric field. We further investigate the role of Coulomb collisions in the ion acceleration efficiency and identify the collisional threshold above which nonthermal ion acceleration is suppressed. Our results reveal how energetic ions may result from unstable nonrelativistic plasma jets in space and astrophysics and provide constraints on the plasma conditions required to reproduce this acceleration mechanism in laboratory experiments.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Fusion Energy Sciences (FES)
Grant/Contract Number:
AC02-76SF00515; FWP 100237; FWP 100331
OSTI ID:
1560646
Alternate ID(s):
OSTI ID: 1543064
Journal Information:
Physics of Plasmas, Vol. 26, Issue 7; ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 9 works
Citation information provided by
Web of Science

References (36)

The Origin of Ultra-High-Energy Cosmic Rays journal September 1984
Scaled laboratory experiments explain the kink behaviour of the Crab Nebula jet journal October 2016
3 He-rich Solar Energetic Particles in Helical Jets on the Sun journal January 2018
Reconnection and particle acceleration in interacting flux ropes – II. 3D effects on test particles in magnetically dominated plasmas journal July 2017
One-to-one direct modeling of experiments and astrophysical scenarios: pushing the envelope on kinetic plasma simulations journal November 2008
Understanding disruptions in tokamaks journal May 2012
A review of the dense Z -pinch journal June 2011
Relativistic MHD simulations of core-collapse GRB jets: 3D instabilities and magnetic dissipation journal December 2015
Efficient Nonthermal Particle Acceleration by the Kink Instability in Relativistic Jets journal December 2018
The role of kink instability in Poynting-flux dominated jets journal April 2006
A binary collision model for plasma simulation with a particle code journal November 1977
Exploring astrophysics-relevant magnetohydrodynamics with pulsed-power laboratory facilities journal April 2019
Experimental Identification of the Kink Instability as a Poloidal Flux Amplification Mechanism for Coaxial Gun Spheromak Formation journal May 2003
Observation of magnetic field generation via the Weibel instability in interpenetrating plasma flows journal January 2015
Relativistic Particle Acceleration in a Folded Current Sheet journal December 2004
Observation of energetic protons trapped in laboratory magnetic-tower jets journal December 2013
3 He-rich Solar Energetic Particles from Sunspot Jets journal December 2018
Magnetic tower outflows from a radial wire array Z-pinch journal July 2005
Weighted Particles in Coulomb Collision Simulations Based on the Theory of a Cumulative Scattering Angle journal September 1998
Three-Dimensional Relativistic Magnetohydrodynamic Simulations of Current-Driven Instability. ii. Relaxation of Pulsar wind Nebula journal January 2011
Numerical methods for particle simulations at extreme densities and temperatures: Weighted particles, relativistic collisions and reduced currents journal July 2008
Model for straight and helical solar jets: I. Parametric studies of the magnetic field geometry journal January 2015
The physics of fast Z pinches journal January 2000
Improved modeling of relativistic collisions and collisional ionization in particle-in-cell codes journal August 2012
Three-dimensional relativistic MHD simulations of active galactic nuclei jets: magnetic kink instability and Fanaroff–Riley dichotomy journal April 2016
The evolution of magnetic tower jets in the laboratory journal May 2007
Laboratory Astrophysics and Collimated Stellar Outflows: The Production of Radiatively Cooled Hypersonic Plasma Jets journal January 2002
Electron and Ion Energization in Relativistic Plasma Turbulence journal February 2019
A laboratory plasma experiment for studying magnetic dynamics of accretion discs and jets journal August 2002
The role of kink instability in Poynting-flux dominated jets
  • Giannios, Dimitrios
  • RECENT ADVANCES IN ASTRONOMY AND ASTROPHYSICS: 7th International Conference of the Hellenic Astronomical Society, AIP Conference Proceedings https://doi.org/10.1063/1.2348028
conference January 2006
Relativistic MHD simulations of core-collapse GRB jets: 3D instabilities and magnetic dissipation text January 2015
Three-dimensional Relativistic MHD Simulations of Active Galactic Nuclei Jets: Magnetic Kink Instability and Fanaroff-Riley Dichotomy text January 2015
3He-Rich Solar Energetic Particles in Helical Jets on the Sun text January 2017
Electron and ion energization in relativistic plasma turbulence text January 2018
3He-Rich Solar Energetic Particles from Sunspot Jets text January 2018
Laboratory Astrophysics and Collimated Stellar Outflows: The Production of Radiatively Cooled Hypersonic Plasma Jets text January 2001

Cited By (2)

Kink Instability: Evolution and Energy Dissipation in Relativistic Force-free Nonrotating Jets journal October 2019
PIC methods in astrophysics: simulations of relativistic jets and kinetic physics in astrophysical systems journal July 2021

Figures / Tables (5)


Similar Records

Efficient Nonthermal Particle Acceleration by the Kink Instability in Relativistic Jets
Journal Article · Fri Dec 14 00:00:00 EST 2018 · Physical Review Letters · OSTI ID:1560646

Efficient Nonthermal Ion and Electron Acceleration Enabled by the Flux-Rope Kink Instability in 3D Nonrelativistic Magnetic Reconnection
Journal Article · Thu Oct 28 00:00:00 EDT 2021 · Physical Review Letters · OSTI ID:1560646

Nonthermal electron and ion acceleration by magnetic reconnection in large laser-driven plasmas
Journal Article · Wed Nov 25 00:00:00 EST 2020 · Physics of Plasmas · OSTI ID:1560646