Publication: Finite difference modeling of coherent wave amplification in the Earth's radiation belts
dc.contributor.coauthor | Harid, V. | |
dc.contributor.coauthor | Golkowski, M. | |
dc.contributor.coauthor | Bell, T. | |
dc.contributor.coauthor | Li, J. D. | |
dc.contributor.department | Department of Electrical and Electronics Engineering | |
dc.contributor.kuauthor | İnan, Umran Savaş | |
dc.contributor.schoolcollegeinstitute | College of Engineering | |
dc.date.accessioned | 2024-11-09T12:31:54Z | |
dc.date.issued | 2014 | |
dc.description.abstract | Modeling of gyroresonant wave-particle interactions in the radiation belts requires solving the Vlasov-Maxwell system of equations in an inhomogenous background geomagnetic field. Previous works have employed particle-in-cell methods or Eulerian solvers (such as the Vlasov Hybrid Simulation code) to provide numerical solutions to the problem. In this report, we provide an alternative numerical approach by utilizing a first order finite difference upwind scheme. When coupled to the narrowband Maxwell's equations, the model reproduces linear as well as nonlinear wave growth of coherent signals. Wave growth is nonlinear growth when the wave amplitude exceeds the minimum value for phase trapping of counterstreaming particles and is linear otherwise. The model also demonstrates free-running frequency variation for a case with a high linear growth rate. In addition, the model confirms the theoretical prediction of a stable phase-space hole during the nonlinear growth process. The plasma parameters and L shell used in this study are typical of those associated with the Siple Station wave injection experiment. | |
dc.description.fulltext | YES | |
dc.description.indexedby | WOS | |
dc.description.indexedby | Scopus | |
dc.description.issue | 23 | |
dc.description.openaccess | YES | |
dc.description.publisherscope | International | |
dc.description.sponsoredbyTubitakEu | N/A | |
dc.description.sponsorship | AFRL Award | |
dc.description.sponsorship | NSF CAREER Award | |
dc.description.version | Publisher version | |
dc.description.volume | 41 | |
dc.identifier.doi | 10.1002/2014GL061787 | |
dc.identifier.eissn | 1944-8007 | |
dc.identifier.embargo | NO | |
dc.identifier.filenameinventoryno | IR00977 | |
dc.identifier.issn | 0094-8276 | |
dc.identifier.quartile | Q1 | |
dc.identifier.scopus | 2-s2.0-84921611885 | |
dc.identifier.uri | https://hdl.handle.net/20.500.14288/1956 | |
dc.identifier.wos | 348462000007 | |
dc.keywords | Cyclotron instability | |
dc.keywords | Coherent wave instability | |
dc.keywords | Radiation belts | |
dc.keywords | Magnetosphere | |
dc.keywords | Wave amplification | |
dc.keywords | Phase space | |
dc.language.iso | eng | |
dc.publisher | American Geophysical Union (AGU) | |
dc.relation.grantno | FA9453-11-C-0011 | |
dc.relation.grantno | 27239350-50917-B | |
dc.relation.grantno | AGS 1254365 | |
dc.relation.ispartof | Geophysical Research Letters | |
dc.relation.uri | http://cdm21054.contentdm.oclc.org/cdm/ref/collection/IR/id/982 | |
dc.subject | Multidisciplinary geosciences | |
dc.subject | Geology | |
dc.title | Finite difference modeling of coherent wave amplification in the Earth's radiation belts | |
dc.type | Journal Article | |
dspace.entity.type | Publication | |
local.contributor.kuauthor | İnan, Umran Savaş | |
local.publication.orgunit1 | College of Engineering | |
local.publication.orgunit2 | Department of Electrical and Electronics Engineering | |
relation.isOrgUnitOfPublication | 21598063-a7c5-420d-91ba-0cc9b2db0ea0 | |
relation.isOrgUnitOfPublication.latestForDiscovery | 21598063-a7c5-420d-91ba-0cc9b2db0ea0 | |
relation.isParentOrgUnitOfPublication | 8e756b23-2d4a-4ce8-b1b3-62c794a8c164 | |
relation.isParentOrgUnitOfPublication.latestForDiscovery | 8e756b23-2d4a-4ce8-b1b3-62c794a8c164 |
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