Three Regimes and Four Modes for the Resonant Saturation of Parallel Ion-beam Instabilities

Motivated by recent advances in laboratory experiments on parallel ion-beam instabilities, we present a theoretical framework for-and simulations of-their evolution toward shock formation and Fermi acceleration. After reviewing the linear theory of beam instabilities, with an emphasis on how magneti...

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Bibliographic Details
Published in:The Astrophysical journal Vol. 873; no. 1; pp. 57 - 72
Main Authors: Weidl, Martin S., Winske, Dan, Niemann, Christoph
Format: Journal Article
Language:English
Published: Philadelphia The American Astronomical Society 01.03.2019
IOP Publishing
Institute of Physics (IOP)
Subjects:
Acceleration
acceleration of particles
ASTRONOMY AND ASTROPHYSICS
Astrophysics
Evolution
Helicity
Ion beams
ISM: magnetic fields
ISM: supernova remnant
ISM: supernova remnants
Laboratory experiments
Magnetic properties
Saturation
ISSN:0004-637X, 1538-4357, 1538-4357
Online Access:Get full text
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Summary:Motivated by recent advances in laboratory experiments on parallel ion-beam instabilities, we present a theoretical framework for-and simulations of-their evolution toward shock formation and Fermi acceleration. After reviewing the linear theory of beam instabilities, with an emphasis on how magnetic helicity and polarization depend on properties of the beam, we compare the evolution and saturation of three distinct parameter regimes: (I) the left-handed "non-resonant" regime; (II) the right-handed beam-gyroresonant regime; (III) the balanced, mixed-turbulence regime.
Bibliography:High-Energy Phenomena and Fundamental Physics
AAS14802
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
AC02-05CH11231
USDOE Office of Science (SC)
ISSN:0004-637X
1538-4357
1538-4357
DOI:10.3847/1538-4357/ab0462