Particle Scattering by Magnetic Fields |
| |
Authors: | Dröge Wolfgang |
| |
Institution: | 1.Institut für Experimentelle und Angewandte Physik, Universit?t Kiel, D-24118, Kiel, Germany ;2.Bartol Research Institute, University of Delaware, Newark, DE, 19716, U.S.A. ; |
| |
Abstract: | The need for a correct quantitative treatment of the interactions between cosmic rays and turbulent magnetic fields continues
to be one of the fundamental problems of modern astrophysics. It is the aim of this paper to review new developments in the
understanding of mechanisms involved in the scattering of charged particles by magnetic field fluctuations. Special emphasis
is given to a comparison of transport parameters determined from the modeling of spacecraft and neutron monitor observation
of solar particle events, with theoretical predictions derived from a spectral analysis of simultaneously measured fluctuation
spectra. It appears that the traditional quasi-linear theory of particle scattering requires only a slight modification, and
the major problem still is our lack of knowledge of the three-dimensional structure of the magnetic turbulence. Possibilities
to better reconcile the theory with observations by properly taking into account the microphysics of wave and turbulence aspects
of the fluctuations, and to use energetic particles as probes to study certain properties of the magnetic turbulence, are
discussed.
This revised version was published online in August 2006 with corrections to the Cover Date. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|