The topology of guiding center orbits in a linear magnetic cusp

Citation
J. Egedal et A. Fasoli, The topology of guiding center orbits in a linear magnetic cusp, PHYS PLASMA, 8(9), 2001, pp. 4042-4052
Citations number
20
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICS OF PLASMAS
ISSN journal
1070-664X → ACNP
Volume
8
Issue
9
Year of publication
2001
Pages
4042 - 4052
Database
ISI
SICI code
1070-664X(200109)8:9<4042:TTOGCO>2.0.ZU;2-A
Abstract
Particle orbits for a linear magnetic cusp configuration, characteristic fo r magnetic reconnection, are analyzed within the guiding center approximati on. A class of particle orbits encircling the magnetic X-line is identified and the orbit phase space partition is obtained and characterized as a fun ction of dimensionless parameters controlling the orbit topology. The large majority of particles are found to be trapped in the direction of the X-li ne implying large neoclassical corrections to the plasma resistivity. This may be the key in explaining the high rates of collisionless magnetic recon nection observed in nature. (C) 2001 American Institute of Physics.