Time-dependent expansion of a weakly-collisional plasma beam in a paraxial magnetic nozzle

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dc.contributor.author Zhou, Jiewei
dc.contributor.author Sánchez Arriaga, Gonzalo
dc.contributor.author Ahedo Galilea, Eduardo Antonio
dc.date.accessioned 2021-04-21T10:03:07Z
dc.date.available 2022-04-15T23:00:04Z
dc.date.issued 2021-04-15
dc.identifier.bibliographicCitation Zhou, J., Sánchez-Arriaga, G., Ahedo, E. (2021). Time-dependent expansion of a weakly-collisional plasma beam in a paraxial magnetic nozzle. Plasma Sources Science and Technology, 30(4), 1-15
dc.identifier.issn 0963-0252
dc.identifier.uri http://hdl.handle.net/10016/32443
dc.description This research was funded by the Comunidad de Madrid(Spain), under PROMETEO-CM project, with Grant No.Y2018/NMT-4750. GS-A was supported by the Ministerio deEconomía y Competitividad (Spain) with Grant No. RYC-2014-15357.
dc.description.abstract The transient and steady-state expansion of a weakly-collisional plasma beam in a paraxial magnetic nozzle is studied with a kinetic Boltzmann&-Poisson model. Only intraspecies collisions involving electrons are considered and these are modeled with a Bhatnagar&-Gross&-Krook operator. Simulations show that occasional collisions progressively populate the phase-space region of isolated trapped electrons until a steady state is reached, which is independent of transient history. The steady state is characterized by a partial occupancy of that region increasing with the collisionality rate but far away from the full occupancy postulated by an alternative steady-state kinetic model. The changes on the amount of trapped electrons with the collisionality rate explain, in turn, the changes on the spatial profiles of main plasma magnitudes. Conclusions on the momentum and energy balances of ions and electrons agree, in terms of general trends, with those of the steady-state kinetic model. In the downstream region of the expansion, ions and electrons lose all their perpendicular energy but they still keep part of their parallel thermal energy. Electron heat fluxes of parallel energy are not negligible and are approximately proportional to enthalpy fluxes.
dc.language.iso eng
dc.publisher IOP Publishing
dc.rights © 2021 IOP Publishing Ltd.
dc.rights Atribución-NoComercial-SinDerivadas 3.0 España
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject.other Electric propulsión
dc.subject.other Magnetic nozzles
dc.subject.other Weakly-collisional plumes
dc.subject.other Electrontrapping
dc.subject.other Heat flux closure
dc.title Time-dependent expansion of a weakly-collisional plasma beam in a paraxial magnetic nozzle
dc.type article
dc.subject.eciencia Biología y Biomedicina
dc.identifier.doi https://doi.org/10.1088/1361-6595/abeff3
dc.rights.accessRights openAccess
dc.relation.projectID Gobierno de España. RYC-2014-15357
dc.relation.projectID Comunidad de Madrid. Y2018/NMT-4750
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 1
dc.identifier.publicationissue 4
dc.identifier.publicationlastpage 15
dc.identifier.publicationtitle Plasma Sources Science and Technology
dc.identifier.publicationvolume 30
dc.identifier.uxxi AR/0000027679
dc.contributor.funder Comunidad de Madrid
dc.contributor.funder Ministerio de Economía y Competitividad (España)
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