Repository logo
 
Publication

Sheath and arc-column voltages in high-pressure arc discharges

2012Journal article Open access
Simple item page
dc.contributor.authorBenilov, M. S.
dc.contributor.authorBenilova, L. G.
dc.contributor.authorLi, He-Ping
dc.contributor.authorWu, Gui-Qing
dc.date.accessioned2022-09-01T09:32:53Z
dc.date.available2022-09-01T09:32:53Z
dc.date.issued2012
dc.description.abstractElectrical characteristics of a 1 cm-long free-burning atmospheric-pressure argon arc are calculated by means of a model taking into account the existence of a near-cathode space-charge sheath and the discrepancy between the electron and heavy-particle temperatures in the arc column. The computed arc voltage exhibits a variation with the arc current I similar to the one revealed by the experiment and exceeds experimental values by no more than approximately 2 V in the current range 20–175 A. The sheath contributes about two-thirds or more of the arc voltage. The LTE model predicts a different variation of the arc voltage with I and underestimates the experimental values appreciably for low currents but by no more than approximately 2 V for I 120 A. However, the latter can hardly be considered as a proof of unimportance of the space-charge sheath at high currents: the LTE model overestimates both the resistance of the bulk of the arc column and the resistance of the part of the column that is adjacent to the cathode, and this overestimation to a certain extent compensates for the neglect of the voltage drop in the sheath. Furthermore, if the latter resistance were evaluated in the framework of the LTE model in an accurate way, then the overestimation would be still much stronger and the obtained voltage would significantly exceed those observed in the experiment.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationBenilov, M. S., Benilova, L. G., Li, H. P., & Wu, G. Q. (2012). Sheath and arc-column voltages in high-pressure arc discharges. Journal of Physics D: Applied Physics, 45(35), 355201. DOI: 10.1088/0022-3727/45/35/355201pt_PT
dc.identifier.doi10.1088/0022-3727/45/35/355201pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.13/4542
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherIOP Publishingpt_PT
dc.relationCathode spots in high-pressure DC gas discharges: self-organization phenomena
dc.relationStrategic Project - UI 219 - 2011-2012
dc.relation.publisherversionhttps://iopscience.iop.org/article/10.1088/0022-3727/45/35/355201/metapt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectSheathpt_PT
dc.subjectArc-column voltagespt_PT
dc.subjectHigh-pressure arc dischargespt_PT
dc.subject.pt_PT
dc.subjectFaculdade de Ciências Exatas e da Engenhariapt_PT
dc.titleSheath and arc-column voltages in high-pressure arc dischargespt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleCathode spots in high-pressure DC gas discharges: self-organization phenomena
oaire.awardTitleStrategic Project - UI 219 - 2011-2012
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FFIS%2F68609%2F2006/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/PEst-OE%2FMAT%2FUI0219%2F2011/PT
oaire.citation.issue35pt_PT
oaire.citation.startPage355201pt_PT
oaire.citation.titleJournal of Physics D: Applied Physicspt_PT
oaire.citation.volume45pt_PT
oaire.fundingStream3599-PPCDT
oaire.fundingStream6817 - DCRRNI ID
person.familyNameBenilov
person.givenNameMikhail
person.identifier.ciencia-id0F14-A79A-97C1
person.identifier.orcid0000-0001-9059-1948
person.identifier.ridK-4443-2015
person.identifier.scopus-author-id7005138676
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication5ccf95a3-53d5-446c-857c-55d64b887175
relation.isAuthorOfPublication.latestForDiscovery5ccf95a3-53d5-446c-857c-55d64b887175
relation.isProjectOfPublication0c0f344b-25a8-4e62-b2ee-bdc0e632c6a5
relation.isProjectOfPublication19d096f2-b171-41fd-822f-f2fa541dabc1
relation.isProjectOfPublication.latestForDiscovery19d096f2-b171-41fd-822f-f2fa541dabc1

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Sheath and arc-column voltages in high-pressure arc discharges.pdf
Size:
647.68 KB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

Artigos em revistas internacionais