Plasma turbulence in the equatorial electrojet: A two-dimensional Hamiltonian fluid model
Abstract
A nonlinear unified fluid model that describes the Equatorial Electrojet, including the Farley-Buneman and gradient-drift plasma instabilities, is defined and shown to be a noncanonical Hamiltonian system. Two geometric constants of motion for the model are obtained and shown to be Casimir invariants. Here, a reformulation of the model shows the roles of the density-gradient scale-length (Ln) and the cross-field drift-velocity ($$υ_E$$) in controlling the dynamics of unstable modes in the growing, transition, and saturation phases of a simulation.
- Authors:
-
[3];
[4]
- Ain Shams Univ., Cairo (Egypt). Phyiscs
- Univ. of Colorado, Boulder, CO (United States)
- Univ. of Texas, Austin, TX (United States). Physics Dept.; Univ. of Texas, Austin, TX (United States). Inst. for Fusion Studies
- Univ. of Texas, Austin, TX (United States). Inst. for Fusion Studies
- Publication Date:
- Research Org.:
- Univ. of Texas, Austin, TX (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1535317
- Alternate Identifier(s):
- OSTI ID: 1366572
- Grant/Contract Number:
- FG02-04ER-54742
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physics of Plasmas
- Additional Journal Information:
- Journal Volume: 24; Journal Issue: 7; Journal ID: ISSN 1070-664X
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; physics
Citation Formats
Hassan, Ehab, Keramidas Charidakos, I., Morrison, P. J., Hatch, D. R., and Horton, W. Plasma turbulence in the equatorial electrojet: A two-dimensional Hamiltonian fluid model. United States: N. p., 2017.
Web. doi:10.1063/1.4989709.
Hassan, Ehab, Keramidas Charidakos, I., Morrison, P. J., Hatch, D. R., & Horton, W. Plasma turbulence in the equatorial electrojet: A two-dimensional Hamiltonian fluid model. United States. https://doi.org/10.1063/1.4989709
Hassan, Ehab, Keramidas Charidakos, I., Morrison, P. J., Hatch, D. R., and Horton, W. Tue .
"Plasma turbulence in the equatorial electrojet: A two-dimensional Hamiltonian fluid model". United States. https://doi.org/10.1063/1.4989709. https://www.osti.gov/servlets/purl/1535317.
@article{osti_1535317,
title = {Plasma turbulence in the equatorial electrojet: A two-dimensional Hamiltonian fluid model},
author = {Hassan, Ehab and Keramidas Charidakos, I. and Morrison, P. J. and Hatch, D. R. and Horton, W.},
abstractNote = {A nonlinear unified fluid model that describes the Equatorial Electrojet, including the Farley-Buneman and gradient-drift plasma instabilities, is defined and shown to be a noncanonical Hamiltonian system. Two geometric constants of motion for the model are obtained and shown to be Casimir invariants. Here, a reformulation of the model shows the roles of the density-gradient scale-length (Ln) and the cross-field drift-velocity ($υ_E$) in controlling the dynamics of unstable modes in the growing, transition, and saturation phases of a simulation.},
doi = {10.1063/1.4989709},
journal = {Physics of Plasmas},
number = 7,
volume = 24,
place = {United States},
year = {Tue Jun 27 00:00:00 EDT 2017},
month = {Tue Jun 27 00:00:00 EDT 2017}
}
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