COSMICRAY TRANSPORT THEORY IN PARTIALLY TURBULENT SPACE PLASMAS WITH COMPRESSIBLE MAGNETIC TURBULENCE
Abstract
Recently, a new transport theory of cosmic rays in magnetized space plasmas extending the quasilinear approximation to the particle orbit has been developed for the case of an axisymmetric incompressible magnetic turbulence. Here, we generalize the approach to the important physical case of a compressible plasma. As previously obtained in the case of an incompressible plasma, we allow arbitrary gyrophase deviations from the unperturbed spiral orbits in the uniform magnetic field. For the case of quasistationary and spatially homogeneous magnetic turbulence we derive, in the small Larmor radius approximation, gyrophaseaveraged cosmicray FokkerPlanck coefficients. Upper limits for the perpendicular and pitchangle FokkerPlanck coefficients and for the perpendicular and parallel spatial diffusion coefficients are presented.
 Authors:
 Institut fuer Theoretische Physik, Lehrstuhl IV: Weltraum und Astrophysik, RuhrUniversitaet Bochum, D44780 Bochum (Germany)
 Publication Date:
 OSTI Identifier:
 22011884
 Resource Type:
 Journal Article
 Resource Relation:
 Journal Name: Astrophysical Journal; Journal Volume: 745; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; APPROXIMATIONS; ASTROPHYSICS; AXIAL SYMMETRY; COSMIC RADIATION; COSMOLOGY; FOKKERPLANCK EQUATION; INCLINATION; LARMOR RADIUS; MAGNETIC FIELDS; ORBITS; PLASMA; TRANSPORT THEORY; TURBULENCE
Citation Formats
Casanova, S., and Schlickeiser, R., Email: sabrina@tp4.rub.de. COSMICRAY TRANSPORT THEORY IN PARTIALLY TURBULENT SPACE PLASMAS WITH COMPRESSIBLE MAGNETIC TURBULENCE. United States: N. p., 2012.
Web. doi:10.1088/0004637X/745/2/153.
Casanova, S., & Schlickeiser, R., Email: sabrina@tp4.rub.de. COSMICRAY TRANSPORT THEORY IN PARTIALLY TURBULENT SPACE PLASMAS WITH COMPRESSIBLE MAGNETIC TURBULENCE. United States. doi:10.1088/0004637X/745/2/153.
Casanova, S., and Schlickeiser, R., Email: sabrina@tp4.rub.de. 2012.
"COSMICRAY TRANSPORT THEORY IN PARTIALLY TURBULENT SPACE PLASMAS WITH COMPRESSIBLE MAGNETIC TURBULENCE". United States.
doi:10.1088/0004637X/745/2/153.
@article{osti_22011884,
title = {COSMICRAY TRANSPORT THEORY IN PARTIALLY TURBULENT SPACE PLASMAS WITH COMPRESSIBLE MAGNETIC TURBULENCE},
author = {Casanova, S. and Schlickeiser, R., Email: sabrina@tp4.rub.de},
abstractNote = {Recently, a new transport theory of cosmic rays in magnetized space plasmas extending the quasilinear approximation to the particle orbit has been developed for the case of an axisymmetric incompressible magnetic turbulence. Here, we generalize the approach to the important physical case of a compressible plasma. As previously obtained in the case of an incompressible plasma, we allow arbitrary gyrophase deviations from the unperturbed spiral orbits in the uniform magnetic field. For the case of quasistationary and spatially homogeneous magnetic turbulence we derive, in the small Larmor radius approximation, gyrophaseaveraged cosmicray FokkerPlanck coefficients. Upper limits for the perpendicular and pitchangle FokkerPlanck coefficients and for the perpendicular and parallel spatial diffusion coefficients are presented.},
doi = {10.1088/0004637X/745/2/153},
journal = {Astrophysical Journal},
number = 2,
volume = 745,
place = {United States},
year = 2012,
month = 2
}

A new transport theory of cosmic rays in magnetized space plasmas with axisymmetric incompressible magnetic turbulence is developed extending the quasilinear approximation to the particle orbit. Arbitrary gyrophase deviations from the unperturbed spiral orbits in the uniform magnetic field are allowed. For quasistationary and spatially homogeneous magnetic turbulence, we derive the small Larmor radius approximation gyrophaseaveraged cosmic ray FokkerPlanck coefficients. The generalized FokkerPlanck coefficients correctly reduce to their known quasilinear values in the corresponding limit. New forms of the quasilinear FokkerPlanck coefficients in axisymmetric turbulence are derived which no longer involve infinite sums of products of Bessel functions, which facilitatemore »

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