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Local ion energization and field structure during dipolarization in kinetic and MHD limits
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UNSPECIFIED (1998) Local ion energization and field structure during dipolarization in kinetic and MHD limits. In: D0 3 Symposium of COSPAR Scientific-Commission-D on Particle Acceleration in Space Plasmas at the 31st COSPAR Scientific Assembly, UNIV BIRMINGHAM, BIRMINGHAM, ENGLAND, JUL 14-21, 1996. Published in: PARTICLE ACCELERATION IN SPACE PLASMAS, 21 (4). pp. 637-640. ISBN 0-08-043312-X. ISSN 0273-1177.
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Abstract
Self consistent one dimensional hybrid code (particle ions, massless electron fluid) simulations are used to examine the possible structure and evolution of an initially out of equilibrium dipolarizing field reversal in the near earth geotail. Here, we run the simulations in both the ion kinetic (hybrid) limit, where the ion moments and the electromagnetic fields are all well resolved on the scales of the ion motion, and the quasi - MHD limit, where the ion motion is still followed correctly but the ion moments and electromagnetic fields are followed on scales larger than the ion kinetic scales. It is found that the evolution of the magnetic field and ion distribution and hence the pressure tensor are markedly different in the two cases. (C) 1998 COSPAR. Published by Elsevier Science Ltd.
| Item Type: | Conference Item (UNSPECIFIED) | ||||
|---|---|---|---|---|---|
| Subjects: | T Technology > TL Motor vehicles. Aeronautics. Astronautics Q Science > QB Astronomy Q Science > QE Geology Q Science > QC Physics |
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| Series Name: | ADVANCES IN SPACE RESEARCH | ||||
| Journal or Publication Title: | PARTICLE ACCELERATION IN SPACE PLASMAS | ||||
| Publisher: | PERGAMON PRESS LTD | ||||
| ISBN: | 0-08-043312-X | ||||
| ISSN: | 0273-1177 | ||||
| Editor: | Blake, JB and Slavin, JA | ||||
| Official Date: | 1998 | ||||
| Dates: |
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| Volume: | 21 | ||||
| Number: | 4 | ||||
| Number of Pages: | 4 | ||||
| Page Range: | pp. 637-640 | ||||
| Publication Status: | Published | ||||
| Title of Event: | D0 3 Symposium of COSPAR Scientific-Commission-D on Particle Acceleration in Space Plasmas at the 31st COSPAR Scientific Assembly | ||||
| Location of Event: | UNIV BIRMINGHAM, BIRMINGHAM, ENGLAND | ||||
| Date(s) of Event: | JUL 14-21, 1996 |
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