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dc.contributor.authorLUNNEY, JAMES GERARD
dc.date.accessioned2009-08-11T11:51:31Z
dc.date.available2009-08-11T11:51:31Z
dc.date.issued1989
dc.date.submitted1989en
dc.identifier.citationP. Choi, H. Chuaqui, JG Lunney, R. Rechle, AJ Davies and JG Lunney 'Plasma formation in a pseudospark discharge' in IEEE Transactions on Plasma Science, 17, (5), 1989, pp 770 - 774en
dc.identifier.otherY
dc.identifier.otherYen
dc.identifier.urihttp://hdl.handle.net/2262/31608
dc.descriptionPUBLISHEDen
dc.description.abstractUnique features associated with the hollow cathode recess in a pseudospark discharge have been identified from streak camera observations. A plasma is observed to form in a highly localized region immediately behind the cathode aperture prior to gas breakdown in the main discharge volume. The point-like plasma expands from an initial diameter of below 0.3 to 3 mm, the size of the cathode aperture, in about 20 ns, at which time the main discharge is formed starting from the axis. Numerical modeling based on swarm parameters has been carried out to investigate the plasma formation in the hollow cathode region. Results show that a combination of varying ionization rates due to the field geometry and differing mobilities of electrons and ions leads to the formation of a highly localized space-charge field on axis behind the hollow cathode. This space-charge field in turn brings about the rapid formation of a highly localized, high density of charge carriers behind the cathode aperture. It is suggested that this point-like formation of a plasma source is the phenomenon observed in the streak camera observation of the hollow cathode region.en
dc.description.sponsorshipThis work was supported by the CEC under Stimulation Action Contract ST2J- 0198. The experimental work was performed at Imperial College, London, UK, and the numerical work was carried out at the Kernforschungszentrum Karlsruhe GmbH, FRG.en
dc.format.extent770en
dc.format.extent774en
dc.format.extent490715 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoenen
dc.publisherIEEEen
dc.relation.ispartofseriesIEEE Transactions on Plasma Scienceen
dc.relation.ispartofseries17en
dc.relation.ispartofseries5en
dc.rightsYen
dc.subjectPhysicsen
dc.titlePlasma formation in a pseudospark dischargeen
dc.typeJournal Articleen
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/jlunney
dc.identifier.rssinternalid17814


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