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dc.contributor.authorKono, Mitsuo
dc.contributor.authorPecseli, Hans Laszlo
dc.date.accessioned2024-10-03T08:42:52Z
dc.date.available2024-10-03T08:42:52Z
dc.date.issued2024-02-16
dc.description.abstractThe time evolutions of the Bohm sheath and the related pre-sheath are analyzed as an initial value problem. The standard classical fluid model of a collisionless plasma is used with cold ions and Boltzmann distributed electrons. Numerical solutions of the basic equations show that a stationary plasma sheath itself is established within a few ion plasma periods. It is demonstrated analytically that for infinitely extended homogeneous plasmas in one spatial dimension, the only possible pre-sheath solution is dynamic, giving a steady expansion: no stationary solution exists for this one-dimensional case. The potential and density drops along the dynamic pre-sheath differ notably from the values found for stationary models suggested in the literature. Collisions give only formal changes to the collisionless results, and their substance remains the same in one spatial dimension. Cylindrical and spherical geometries, on the other hand, allow for physically acceptable, fully nonlinear, stationary solutions with analytical results given. These are supported by numerical solutions.en_US
dc.identifier.citationKono, Pecseli. Dynamic evolutions of Bohm sheaths and pre-sheaths. Physics of Plasmas. 2024;31(2)en_US
dc.identifier.cristinIDFRIDAID 2252392
dc.identifier.doi10.1063/5.0176287
dc.identifier.issn1070-664X
dc.identifier.issn1089-7674
dc.identifier.urihttps://hdl.handle.net/10037/34998
dc.language.isoengen_US
dc.publisherAIP Publishingen_US
dc.relation.journalPhysics of Plasmas
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2024 The Author(s)en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0en_US
dc.rightsAttribution 4.0 International (CC BY 4.0)en_US
dc.titleDynamic evolutions of Bohm sheaths and pre-sheathsen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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Attribution 4.0 International (CC BY 4.0)
Except where otherwise noted, this item's license is described as Attribution 4.0 International (CC BY 4.0)