Centrifugal trapping in the magnetotail
Particles leaving the neutral sheet in the distant magnetotail at times display adiabatic trajectory sequences characterized by an inflection toward the equator and subsequent mirroring in its vicinity. We demonstrate that this low-latitude mirroring results primarily from a centrifugal deceleration...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
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| Series: | Annales Geophysicae |
| Online Access: | http://www.ann-geophys.net/13/242/1995/angeo-13-242-1995.html |
| _version_ | 1811335056859332608 |
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| author | D. C. Delcourt R. F. Martin J. A. Sauvaud T. E. Moore |
| author_facet | D. C. Delcourt R. F. Martin J. A. Sauvaud T. E. Moore |
| author_sort | D. C. Delcourt |
| collection | DOAJ |
| description | Particles leaving the neutral sheet in the distant magnetotail at times display adiabatic trajectory sequences characterized by an inflection toward the equator and subsequent mirroring in its vicinity. We demonstrate that this low-latitude mirroring results primarily from a centrifugal deceleration due to the fast direction-changing <strong>E</strong>×<strong>B</strong> drift. This effect which we refer to as "centrifugal trapping" appears both in guiding centre and full particle treatments. It thus does not directly relate to nonadiabatic motion. However, pitch angle scattering due to nonadiabatic neutral sheet interaction does play a role in reducing the parallel speed of the particles. We show that centrifugal trapping is an important mechanism for the confinement of the slowest (typically below the equatorial <strong>E</strong>×<strong>B</strong> drift speed) plasma sheet populations to the midplane vicinity. |
| first_indexed | 2024-04-13T17:18:21Z |
| format | Article |
| id | doaj.art-4629521be8734e9097375161636daab9 |
| institution | Directory Open Access Journal |
| issn | 0992-7689 1432-0576 |
| language | English |
| last_indexed | 2024-04-13T17:18:21Z |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Annales Geophysicae |
| spelling | doaj.art-4629521be8734e9097375161636daab92022-12-22T02:38:03ZengCopernicus PublicationsAnnales Geophysicae0992-76891432-0576133242246Centrifugal trapping in the magnetotailD. C. DelcourtR. F. MartinJ. A. SauvaudT. E. MooreParticles leaving the neutral sheet in the distant magnetotail at times display adiabatic trajectory sequences characterized by an inflection toward the equator and subsequent mirroring in its vicinity. We demonstrate that this low-latitude mirroring results primarily from a centrifugal deceleration due to the fast direction-changing <strong>E</strong>×<strong>B</strong> drift. This effect which we refer to as "centrifugal trapping" appears both in guiding centre and full particle treatments. It thus does not directly relate to nonadiabatic motion. However, pitch angle scattering due to nonadiabatic neutral sheet interaction does play a role in reducing the parallel speed of the particles. We show that centrifugal trapping is an important mechanism for the confinement of the slowest (typically below the equatorial <strong>E</strong>×<strong>B</strong> drift speed) plasma sheet populations to the midplane vicinity.http://www.ann-geophys.net/13/242/1995/angeo-13-242-1995.html |
| spellingShingle | D. C. Delcourt R. F. Martin J. A. Sauvaud T. E. Moore Centrifugal trapping in the magnetotail Annales Geophysicae |
| title | Centrifugal trapping in the magnetotail |
| title_full | Centrifugal trapping in the magnetotail |
| title_fullStr | Centrifugal trapping in the magnetotail |
| title_full_unstemmed | Centrifugal trapping in the magnetotail |
| title_short | Centrifugal trapping in the magnetotail |
| title_sort | centrifugal trapping in the magnetotail |
| url | http://www.ann-geophys.net/13/242/1995/angeo-13-242-1995.html |
| work_keys_str_mv | AT dcdelcourt centrifugaltrappinginthemagnetotail AT rfmartin centrifugaltrappinginthemagnetotail AT jasauvaud centrifugaltrappinginthemagnetotail AT temoore centrifugaltrappinginthemagnetotail |