Ionization layer with collision-free atoms at the edge of partially to fully ionized plasmas

Benilov; Benilov, Mikhail

Publication

Ionization layer with collision-free atoms at the edge of partially to fully ionized plasmas

2024-05-01Journal article

datacite.subject.fos	Ciências Naturais::Ciências Físicas
datacite.subject.fos	Engenharia e Tecnologia::Engenharia dos Materiais
dc.contributor.author	Benilov
dc.contributor.author	Benilov, Mikhail
dc.date.accessioned	2025-05-09T10:31:48Z
dc.date.available	2025-05-09T10:31:48Z
dc.date.issued	2024-05-01
dc.description.abstract	<jats:title>Abstract</jats:title> <jats:p>When a hot arc spot has just formed on the cathode surface, e.g. in the course of arc ignition on a cold cathode, a significant part of the current still flows in the glow-discharge mode to the cold surface outside the spot. The near-cathode voltage continues to be high at all points of the cathode surface. The mean free path for collisions between the atoms and the ions within the plasma ball near the spot is comparable to, or exceeds, the thickness of the ionization layer, which is a part of the near-cathode non-equilibrium layer where the ion current to the cathode is generated. The evaluation of the ion current to the cathode surface under such conditions is revisited. A fluid description of the ion motion in the ionization layer is combined with a kinetic description of the atom motion. The resulting problem admits a simple analytical solution. Formulas for the evaluation of the ion current to the cathode for a wide range of conditions are derived and the possibilities of using these formulas to improve the accuracy of existing methods for modeling high-pressure arc discharges in relation to glow-to-arc transitions are discussed.</jats:p>	eng
dc.identifier.citation	Benilov, M. S. (2024). Ionization layer with collision-free atoms at the edge of partially to fully ionized plasmas. Plasma Sources Science and Technology, 33(5), 055002.
dc.identifier.doi	10.1088/1361-6595/ad3f49
dc.identifier.issn	0963-0252
dc.identifier.issn	1361-6595
dc.identifier.uri	http://hdl.handle.net/10400.13/7265
dc.language.iso	eng
dc.peerreviewed	yes
dc.publisher	IOP Publishing
dc.relation	UIDB/50010/2020
dc.relation	UIDP/50010/2020
dc.relation	LA/P/0061/2020
dc.relation.ispartof	Plasma Sources Science and Technology
dc.rights.uri	http://creativecommons.org/licenses/by/4.0/
dc.subject	Ionization layer
dc.subject	Arc discharges
dc.subject	Modelling of arc discharges
dc.subject	Near-cathode phenomena
dc.subject	.
dc.subject	Faculdade de Ciências Exatas e da Engenharia
dc.title	Ionization layer with collision-free atoms at the edge of partially to fully ionized plasmas	eng
dc.type	journal article
dspace.entity.type	Publication
oaire.citation.issue	5
oaire.citation.title	Plasma Sources Science and Technology
oaire.citation.volume	33
oaire.version	http://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyName	Benilov
person.givenName	Mikhail
person.identifier.ciencia-id	0F14-A79A-97C1
person.identifier.orcid	0000-0001-9059-1948
person.identifier.rid	K-4443-2015
person.identifier.scopus-author-id	7005138676
relation.isAuthorOfPublication	5ccf95a3-53d5-446c-857c-55d64b887175
relation.isAuthorOfPublication.latestForDiscovery	5ccf95a3-53d5-446c-857c-55d64b887175