Kinetic features of collisionless sheaths around polarized cylindrical emitters from the orbital motion theory

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dc.contributor.author Chen, Xin
dc.contributor.author Sánchez Arriaga, Gonzalo
dc.date.accessioned 2021-03-22T14:00:44Z
dc.date.available 2021-03-22T14:00:44Z
dc.date.issued 2017-10
dc.identifier.bibliographicCitation Physics of plasmas, 24(10), 103515, Oct. 2017
dc.identifier.issn 1070-664X
dc.identifier.issn 1089-7674 (online)
dc.identifier.uri http://hdl.handle.net/10016/32197
dc.description.abstract The kinetic features of the sheath around a cylindrical emitter immersed in collisionless plasma at rest are analysed. After finding self-consistently the electric potential by applying the Orbital Motion Theory to the Vlasov-Poisson system, the local distribution functions are reconstructed and the radial profiles of important macroscopic quantities (plasma densities, currents, and temperatures) are then computed. It is found that there can only be three kinds of holes that are bound by three different boundaries-two related to the constraints from orbital effects and the other due to the electric potential barrier. The results are presented for three regimes: negative probe bias with monotonic and non-monotonic potential and positive probe bias with non-monotonic potential. To understand the variation of macroscopic-quantity radial profiles, three diagrams are presented for kinetic features: the epsilon l-diagram for the integration domains of the two orbital invariants, the effective potential, and the local distribution function. The envelope in the epsilon l-diagram is crucial to identify different orbital behaviours, which can be used as a guideline for analytical analyses and serve as one of the criteria to refine the mesh used in numerical calculations. Published by AIP Publishing.
dc.description.sponsorship This work was supported by the Ministerio de Economía y Competitividad of Spain (Grant No ESP 2016-75887). Work by G. Sánchez-Arriaga was supported by the Ministerio de Economía y Competitividad of Spain (Grant No. RYC-2014-15357).
dc.format.extent 15
dc.language.iso eng
dc.publisher AIP Publishing
dc.rights Published by AIP Publishing.
dc.subject.other Electrostatic probes
dc.subject.other Limited regime
dc.subject.other Plasma
dc.subject.other Space
dc.title Kinetic features of collisionless sheaths around polarized cylindrical emitters from the orbital motion theory
dc.type article
dc.subject.eciencia Física
dc.identifier.doi https://doi.org/10.1063/1.5004682
dc.rights.accessRights openAccess
dc.relation.projectID Gobierno de España. RYC-2014-15357
dc.relation.projectID Gobierno de España. ESP2016-75887-P
dc.type.version publishedVersion
dc.identifier.publicationfirstpage 1
dc.identifier.publicationissue 10, 103515
dc.identifier.publicationlastpage 15
dc.identifier.publicationtitle PHYSICS OF PLASMAS
dc.identifier.publicationvolume 24
dc.identifier.uxxi AR/0000020642
dc.contributor.funder Ministerio de Economía y Competitividad (España)
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