Charged Particle Diffusion in Isotropic Random Magnetic Fields

The investigation of the diffusive transport of charged particles in a turbulent magnetic field remains a subject of considerable interest. Research has most frequently concentrated on determining the diffusion coefficient in the presence of a mean magnetic field. Here we consider the diffusion of c...

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Detalles Bibliográficos
Autor principal:	Dmitruk, Pablo Ariel
Publicado:	2017
Materias:	astroparticle physics cosmic rays diffusion magnetic fields scattering turbulence
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0004637X_v837_n2_p_Subedi http://hdl.handle.net/20.500.12110/paper_0004637X_v837_n2_p_Subedi
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_0004637X_v837_n2_p_Subedi
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spelling	paper:paper_0004637X_v837_n2_p_Subedi2023-06-08T14:29:19Z Charged Particle Diffusion in Isotropic Random Magnetic Fields Dmitruk, Pablo Ariel astroparticle physics cosmic rays diffusion magnetic fields scattering turbulence The investigation of the diffusive transport of charged particles in a turbulent magnetic field remains a subject of considerable interest. Research has most frequently concentrated on determining the diffusion coefficient in the presence of a mean magnetic field. Here we consider the diffusion of charged particles in fully three-dimensional isotropic turbulent magnetic fields with no mean field, which may be pertinent to many astrophysical situations. We identify different ranges of particle energy depending upon the ratio of Larmor radius to the characteristic outer length scale of turbulence. Two different theoretical models are proposed to calculate the diffusion coefficient, each applicable to a distinct range of particle energies. The theoretical results are compared to those from computer simulations, showing good agreement. © 2017. The American Astronomical Society. All rights reserved.. Fil:Dmitruk, P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2017 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0004637X_v837_n2_p_Subedi http://hdl.handle.net/20.500.12110/paper_0004637X_v837_n2_p_Subedi
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	astroparticle physics cosmic rays diffusion magnetic fields scattering turbulence
spellingShingle	astroparticle physics cosmic rays diffusion magnetic fields scattering turbulence Dmitruk, Pablo Ariel Charged Particle Diffusion in Isotropic Random Magnetic Fields
topic_facet	astroparticle physics cosmic rays diffusion magnetic fields scattering turbulence
description	The investigation of the diffusive transport of charged particles in a turbulent magnetic field remains a subject of considerable interest. Research has most frequently concentrated on determining the diffusion coefficient in the presence of a mean magnetic field. Here we consider the diffusion of charged particles in fully three-dimensional isotropic turbulent magnetic fields with no mean field, which may be pertinent to many astrophysical situations. We identify different ranges of particle energy depending upon the ratio of Larmor radius to the characteristic outer length scale of turbulence. Two different theoretical models are proposed to calculate the diffusion coefficient, each applicable to a distinct range of particle energies. The theoretical results are compared to those from computer simulations, showing good agreement. © 2017. The American Astronomical Society. All rights reserved..
author	Dmitruk, Pablo Ariel
author_facet	Dmitruk, Pablo Ariel
author_sort	Dmitruk, Pablo Ariel
title	Charged Particle Diffusion in Isotropic Random Magnetic Fields
title_short	Charged Particle Diffusion in Isotropic Random Magnetic Fields
title_full	Charged Particle Diffusion in Isotropic Random Magnetic Fields
title_fullStr	Charged Particle Diffusion in Isotropic Random Magnetic Fields
title_full_unstemmed	Charged Particle Diffusion in Isotropic Random Magnetic Fields
title_sort	charged particle diffusion in isotropic random magnetic fields
publishDate	2017
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0004637X_v837_n2_p_Subedi http://hdl.handle.net/20.500.12110/paper_0004637X_v837_n2_p_Subedi
work_keys_str_mv	AT dmitrukpabloariel chargedparticlediffusioninisotropicrandommagneticfields
_version_	1768543972893917184

Charged Particle Diffusion in Isotropic Random Magnetic Fields

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