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Charged-particle orbits near a magnetic null point

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Jaroensutasinee, K. and Rowlands, G. (George). (2000) Charged-particle orbits near a magnetic null point. Journal of Plasma Physics, Vol.64 (No.3). pp. 255-262. ISSN 0022-3778

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Official URL: http://dx.doi.org/10.1017/S0022377800008461

Abstract

An approximate analytical expression is obtained for the orbits of a charged particle moving in a cusp magnetic field. The particle orbits pass close to or through a region of zero magnetic field before being reflected in regions where the magnetic field is strong. Comparison with numerically evaluated orbits shows that the analytical formula is surprisingly good and captures all the main features of the particle motion. A map describing the long-time behaviour of such orbits is obtained.

Item Type:	Journal Article
Subjects:	Q Science > QC Physics
Divisions:	Faculty of Science > Physics
Library of Congress Subject Headings (LCSH):	Particles (Nuclear physics), Nuclear charge, Magnetic fields
Journal or Publication Title:	Journal of Plasma Physics
Publisher:	Cambridge University Press
ISSN:	0022-3778
Date:	September 2000
Volume:	Vol.64
Number:	No.3
Page Range:	pp. 255-262
Identification Number:	10.1017/S0022377800008461
Status:	Peer Reviewed
Access rights to Published version:	Open Access
Funder:	Institute for the Promotion of Teaching Science and Technology (Thailand) (IPTST)
References:	Cohen, R., Rowlands, G. and Foote, J. H. 1978 Phys. Fluids 21, 627. Howard, J. E. 1971 Phys. Fluids 14, 2373. Jaroensutasinee, K. and Rowlands, G. 1994 J. Phys. A27, 1163. Lichtenberg, A. J. and Lieberman, M. A. 1983 Regular and Stochastic Motion. Springer-Verlag, New York. Nip, M. L. A., Tuszynski, J. A., Otwinowski, M. and Dixon, J. M. 1992 J. Phys. A25, 5553. Rowlands, G. 1991 J. Comput. Phys. 97, 235.
URI:	http://wrap.warwick.ac.uk/id/eprint/827