Local analysis of electrostatic modes in a two-fluid E × B plasma

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dc.contributor.author Ramos, Jesús J.
dc.contributor.author Bello-Benítez, Enrique
dc.contributor.author Ahedo Galilea, Eduardo Antonio
dc.date.accessioned 2021-06-30T11:42:34Z
dc.date.issued 2021-05-26
dc.identifier.bibliographicCitation Ramos, J. J., Bello-Benítez, E., & Ahedo, E. (2021). Local analysis of electrostatic modes in a two-fluid E × B plasma. Physics of Plasmas, 28(5), 052115
dc.identifier.issn 1070-664X
dc.identifier.uri http://hdl.handle.net/10016/32963
dc.description.abstract A local study of linear electrostatic modes, applicable to the dynamics perpendicular to the magnetic field in a plasma with crossed electric and magnetic fields, is presented. The analysis is based on a two-fluid model that takes into account the finite-electron-gyroradius effects through a rigorous gyroviscosity tensor and includes a dissipative friction force in the electron momentum equation. A comprehensive dispersion relation, valid for arbitrary electron temperature, is derived, which describes properly all the relevant waves for wavelengths longer than the electron Larmor radius. For a homogeneous and dissipationless plasma, such a fluid dispersion relation agrees with the long-wavelength limit of the kinetic electron–cyclotron-drift instability dispersion relation that extends the results to arbitrary short wavelengths. The general fluid dispersion relation covers different parametric regimes that depend on the relative ion-to-electron drift velocity and on the presence of equilibrium inhomogeneities and/or dissipation. Depending on such conditions, its roots yield as follows: two-stream instabilities, driven solely by the relative drift between species; drift-gradient instabilities, driven by the combination of the relative drift and equilibrium gradients; and drift-dissipative instabilities, driven by the combination of the relative drift and friction. Instability thresholds are determined and some distinctive unstable modes are described analytically.
dc.description.sponsorship This research was funded mainly by the Comunidad de Madrid (Spain), under PROMETEO-CM project, with Grant No. Y2018/NMT-4750. Enrique Bello-Benítez is supported by Spain's Ministerio de Ciencia, Innovación y Universidades, under Grant No. FPU18/03686. Jesús Ramos and Eduardo Ahedo acknowledge support by the ESPEOS project, funded by the Agencia Estatal de Investigación (Spain's National Research and Development Plan), under Grant No. PID2019-108034 RB-I00/AEI/10.13039/501100011033.
dc.format.extent 12
dc.language.iso eng
dc.publisher AIP Publishing
dc.rights © 2021 Author(s). Published under an exclusive license by AIP Publishing
dc.title Local analysis of electrostatic modes in a two-fluid E × B plasma
dc.type article
dc.subject.eciencia Física
dc.identifier.doi https://doi.org/10.1063/5.0039341
dc.rights.accessRights embargoedAccess
dc.relation.projectID Comunidad de Madrid. Y2018/NMT-4750
dc.relation.projectID Gobierno de España. PID2019-108034RB-I00
dc.type.version publishedVersion
dc.identifier.publicationfirstpage 1
dc.identifier.publicationissue 5 (052115)
dc.identifier.publicationlastpage 12
dc.identifier.publicationtitle Physics of Plasmas
dc.identifier.publicationvolume 28
dc.identifier.uxxi AR/0000028045
carlosiii.embargo.liftdate 2022-05-26
carlosiii.embargo.terms 2022-05-26
dc.contributor.funder Comunidad de Madrid
dc.contributor.funder Ministerio de Ciencia e Innovación (España)
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