The field line topology of a uniform magnetic field superposed on the field of a distributed ring current
- Princeton Univ., NJ (USA). Plasma Physics Lab.
- General Atomics, San Diego, CA (USA)
A magnetic field line topology with nulls, generated by superimposing a uniform magnetic field onto the field from a distributed ring current, is analyzed. This simple model is amenable to substantial analytical progress and also facilitates the visualization of the three dimensional field geometry. Four nulls are seen to exist and representative field lines and tubes of flux found by numerical integration are presented. An infinite number of topologically distinct flux bundles is found. A convenient mapping is defined which proves very useful in distinguishing between and following the paths of the different tubes of flux as they traverse through the null system. The complexities already present in this simple but nontrivial configuration serve to emphasize the difficulties in analyzing more complicated geometries, but the intuition gained from this study proves beneficial in those cases. One such example is the application to a model of plasmoid formations in the earth's magnetotail. 7 refs., 19 figs.
- Research Organization:
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
- Sponsoring Organization:
- USDOE; National Aeronautics and Space Administration (NASA); USDOE, Washington, DC (USA); National Aeronautics and Space Administration, Washington, DC (USA)
- DOE Contract Number:
- AC02-76CH03073
- OSTI ID:
- 5523618
- Report Number(s):
- PPPL-2767; ON: DE91015377; CNN: NASW-4393
- Country of Publication:
- United States
- Language:
- English
Similar Records
The magnetic topology of the plasmoid flux rope in a MHD simulation of magnetotail reconnection
EFFECTS OF FIELD-LINE TOPOLOGY ON ENERGY PROPAGATION IN THE CORONA