Relativistic surfatron process for Landau resonant electrons in radiation belts
Recent theoretical studies of the nonlinear wave-particle interactions for relativistic particles have shown that Landau resonant orbits could be efficiently accelerated along the mean background magnetic field for propagation angles θ in close proximity to a critical propagation θ<sub&...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2014-01-01
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| Series: | Nonlinear Processes in Geophysics |
| Online Access: | http://www.nonlin-processes-geophys.net/21/115/2014/npg-21-115-2014.pdf |
| _version_ | 1819102025487482880 |
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| author | A. Osmane A. M. Hamza |
| author_facet | A. Osmane A. M. Hamza |
| author_sort | A. Osmane |
| collection | DOAJ |
| description | Recent theoretical studies of the nonlinear wave-particle
interactions for relativistic particles have shown that Landau resonant
orbits could be efficiently accelerated along the mean background magnetic
field for propagation angles θ in close proximity to a critical
propagation θ<sub>c</sub> associated with a Hopf–Hopf bifurcation
condition. In this report, we extend previous studies to reach greater
modeling capacities for the study of electrons in radiation belts by
including longitudinal wave effects and inhomogeneous magnetic fields. We
find that even though both effects can limit the surfatron acceleration of
electrons in radiation belts, gains in energy of the order of 100 keV,
taking place on one tenth of a millisecond, are sufficiently strong for the
mechanism to be relevant to radiation belt dynamics. |
| first_indexed | 2024-12-22T01:28:00Z |
| format | Article |
| id | doaj.art-791fef5efc89430fa82687a8b1539eb3 |
| institution | Directory Open Access Journal |
| issn | 1023-5809 1607-7946 |
| language | English |
| last_indexed | 2024-12-22T01:28:00Z |
| publishDate | 2014-01-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Nonlinear Processes in Geophysics |
| spelling | doaj.art-791fef5efc89430fa82687a8b1539eb32022-12-21T18:43:33ZengCopernicus PublicationsNonlinear Processes in Geophysics1023-58091607-79462014-01-0121111512510.5194/npg-21-115-2014Relativistic surfatron process for Landau resonant electrons in radiation beltsA. Osmane0A. M. Hamza1University of New Brunswick, Physics Department, Fredericton, New Brunswick, CanadaUniversity of New Brunswick, Physics Department, Fredericton, New Brunswick, CanadaRecent theoretical studies of the nonlinear wave-particle interactions for relativistic particles have shown that Landau resonant orbits could be efficiently accelerated along the mean background magnetic field for propagation angles θ in close proximity to a critical propagation θ<sub>c</sub> associated with a Hopf–Hopf bifurcation condition. In this report, we extend previous studies to reach greater modeling capacities for the study of electrons in radiation belts by including longitudinal wave effects and inhomogeneous magnetic fields. We find that even though both effects can limit the surfatron acceleration of electrons in radiation belts, gains in energy of the order of 100 keV, taking place on one tenth of a millisecond, are sufficiently strong for the mechanism to be relevant to radiation belt dynamics.http://www.nonlin-processes-geophys.net/21/115/2014/npg-21-115-2014.pdf |
| spellingShingle | A. Osmane A. M. Hamza Relativistic surfatron process for Landau resonant electrons in radiation belts Nonlinear Processes in Geophysics |
| title | Relativistic surfatron process for Landau resonant electrons in radiation belts |
| title_full | Relativistic surfatron process for Landau resonant electrons in radiation belts |
| title_fullStr | Relativistic surfatron process for Landau resonant electrons in radiation belts |
| title_full_unstemmed | Relativistic surfatron process for Landau resonant electrons in radiation belts |
| title_short | Relativistic surfatron process for Landau resonant electrons in radiation belts |
| title_sort | relativistic surfatron process for landau resonant electrons in radiation belts |
| url | http://www.nonlin-processes-geophys.net/21/115/2014/npg-21-115-2014.pdf |
| work_keys_str_mv | AT aosmane relativisticsurfatronprocessforlandauresonantelectronsinradiationbelts AT amhamza relativisticsurfatronprocessforlandauresonantelectronsinradiationbelts |