Author: Andreas Shalchi
Publisher: Springer Science & Business Media
ISBN: 3642003095
Category : Science
Languages : en
Pages : 210
Book Description
If charged particles move through the interplanetary or interstellar medium, they interact with a large-scale magnetic ?eld such as the magnetic ?eld of the Sun or the Galactic magnetic ?eld. As these background ?elds are usually nearly constant in time and space, they can be approximated by a homogeneous ?eld. If there are no additional ?elds, the particle trajectory is a perfect helix along which the par- cle moves at a constant speed. In reality, however, there are turbulent electric and magnetic?elds dueto the interstellaror solar wind plasma. These ?elds lead to sc- tering of the cosmic rays parallel and perpendicular to the background ?eld. These scattering effects, which usually are of diffusive nature, can be described by s- tial diffusion coef?cients or, alternatively, by mean free paths. The knowledge of these parameters is essential for describing cosmic ray propagation as well as d- fusive shock acceleration. The latter process is responsible for the high cosmic ray energies that have been observed. The layout of this book is as follows. In Chap. 1, the general physical scenario is presented. We discuss fundamental processes such as cosmic ray propagation and acceleration in different systems such as the solar system or the interst- lar space. These processes are a consequence of the interaction between charged cosmic particles and an astrophysical plasma (turbulence). The properties of such plasmas are therefore the subject of Chap. 2.
Nonlinear Cosmic Ray Diffusion Theories
Author: Andreas Shalchi
Publisher: Springer Science & Business Media
ISBN: 3642003095
Category : Science
Languages : en
Pages : 210
Book Description
If charged particles move through the interplanetary or interstellar medium, they interact with a large-scale magnetic ?eld such as the magnetic ?eld of the Sun or the Galactic magnetic ?eld. As these background ?elds are usually nearly constant in time and space, they can be approximated by a homogeneous ?eld. If there are no additional ?elds, the particle trajectory is a perfect helix along which the par- cle moves at a constant speed. In reality, however, there are turbulent electric and magnetic?elds dueto the interstellaror solar wind plasma. These ?elds lead to sc- tering of the cosmic rays parallel and perpendicular to the background ?eld. These scattering effects, which usually are of diffusive nature, can be described by s- tial diffusion coef?cients or, alternatively, by mean free paths. The knowledge of these parameters is essential for describing cosmic ray propagation as well as d- fusive shock acceleration. The latter process is responsible for the high cosmic ray energies that have been observed. The layout of this book is as follows. In Chap. 1, the general physical scenario is presented. We discuss fundamental processes such as cosmic ray propagation and acceleration in different systems such as the solar system or the interst- lar space. These processes are a consequence of the interaction between charged cosmic particles and an astrophysical plasma (turbulence). The properties of such plasmas are therefore the subject of Chap. 2.
Publisher: Springer Science & Business Media
ISBN: 3642003095
Category : Science
Languages : en
Pages : 210
Book Description
If charged particles move through the interplanetary or interstellar medium, they interact with a large-scale magnetic ?eld such as the magnetic ?eld of the Sun or the Galactic magnetic ?eld. As these background ?elds are usually nearly constant in time and space, they can be approximated by a homogeneous ?eld. If there are no additional ?elds, the particle trajectory is a perfect helix along which the par- cle moves at a constant speed. In reality, however, there are turbulent electric and magnetic?elds dueto the interstellaror solar wind plasma. These ?elds lead to sc- tering of the cosmic rays parallel and perpendicular to the background ?eld. These scattering effects, which usually are of diffusive nature, can be described by s- tial diffusion coef?cients or, alternatively, by mean free paths. The knowledge of these parameters is essential for describing cosmic ray propagation as well as d- fusive shock acceleration. The latter process is responsible for the high cosmic ray energies that have been observed. The layout of this book is as follows. In Chap. 1, the general physical scenario is presented. We discuss fundamental processes such as cosmic ray propagation and acceleration in different systems such as the solar system or the interst- lar space. These processes are a consequence of the interaction between charged cosmic particles and an astrophysical plasma (turbulence). The properties of such plasmas are therefore the subject of Chap. 2.
Cosmic Ray Diffusion
Author: Thomas Joseph Birmingham
Publisher:
ISBN:
Category : Cosmic rays
Languages : en
Pages : 34
Book Description
Topics discussed and summarized are: cosmic ray measurements as related to diffusion theory; quasi-linear theory, nonlinear theory, and computer simulation of cosmic ray pitch-angle diffusion; and magnetic field fluctuation measurements as related to diffusion theory.
Publisher:
ISBN:
Category : Cosmic rays
Languages : en
Pages : 34
Book Description
Topics discussed and summarized are: cosmic ray measurements as related to diffusion theory; quasi-linear theory, nonlinear theory, and computer simulation of cosmic ray pitch-angle diffusion; and magnetic field fluctuation measurements as related to diffusion theory.
A Nonlinear Theory of Cosmic Ray Pitch Angle Diffusion in Homogeneous Magnetostatic Turbulence
Author: Melvyn L. Goldstein
Publisher:
ISBN:
Category : Cosmic rays
Languages : en
Pages : 48
Book Description
Publisher:
ISBN:
Category : Cosmic rays
Languages : en
Pages : 48
Book Description
COSMIC RAY DIFFUSION- REPORT OF THE WORKSHOP IN COSMIC RAY DIFFUSION THEORY- NASA.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Nonlinear Effects in Cosmic Ray Transport Theory
Author: Andreas Shalchi
Publisher:
ISBN:
Category :
Languages : en
Pages : 172
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 172
Book Description
Selected Papers on Cosmic Ray Origin Theories
Author: Stephen Rosen
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 452
Book Description
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 452
Book Description
NASA Technical Note
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 40
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 40
Book Description
Nuclear Science Abstracts
Author:
Publisher:
ISBN:
Category : Nuclear energy
Languages : en
Pages : 964
Book Description
Publisher:
ISBN:
Category : Nuclear energy
Languages : en
Pages : 964
Book Description
Investigation of Resonance Integrals Occurring in Cosmic Ray Diffusion Theory
Author: Frank C. Jones
Publisher:
ISBN:
Category : Cosmic rays
Languages : en
Pages : 7
Book Description
Publisher:
ISBN:
Category : Cosmic rays
Languages : en
Pages : 7
Book Description
NASA Technical Note
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 382
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 382
Book Description