Please use this identifier to cite or link to this item:
|Title:||Temporary topological trapping and escape of charged particles in a flux tube as a cause of delay in time asymptotic transport|
John W. Bieber
Bartol Research Institute
|Keywords:||Earth and Planetary Sciences|
|Citation:||Geophysical Research Letters. Vol.34, No.17 (2007)|
|Abstract:||The scenario of temporary trapping of magnetic field lines and their subsequent suppressed diffusive escape from topological magnetic structures embedded in turbulence has been offered as a way to understand the persistence of "dropouts", or sharp gradients in observed heliospheric energetic particle intensities. Here a set of numerical experiments is carried out to show the basic physics of this process: charged test particles can be temporarily trapped in flux tubes and then escape due to random turbulent perturbations in the magnetic field. The overall effect is a delay in the onset of time-asymptotic transport. We thus confirm that previous arguments based on field line transport are also applicable to test particle transport. Copyright 2007 by the American Geophysical Union.|
|Appears in Collections:||Scopus 2006-2010|
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.