On the gas heating effect of helium atmospheric pressure plasma jet

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dc.contributor.authordo Nascimento, Fellype [UNESP]
dc.contributor.authorGerling, Torsten
dc.contributor.authorKostov, Konstantin Georgiev [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionLeibniz Institute for Plasma Science and Technology-INP
dc.date.accessioned2023-07-29T16:11:20Z
dc.date.available2023-07-29T16:11:20Z
dc.date.issued2023-05-01
dc.description.abstractPlasma medicine is an emerging research field which has been driven by the development of plasma sources suitable to generate low temperature plasmas. In many cases, such devices can operate without a gas flow, producing a plasma discharge from the ambient air. However, the most common case is the use of a working gas at a given flow rate to produce a plasma jet. Helium (He) is one of the gases commonly used as the carrier gas to generate cold atmospheric pressure plasma jets (CAPPJs) due mainly to the easiness to ignite a gas discharge with it. However, in this work it was observed that most of the heating of a He CAPPJ can come just from the expansion of the He gas. This was found through measurements of gas temperature (T gas ), using fiber optic temperature (FOT) sensors, and thermal output, using both FOT and infrared imaging with the He flow impinging on a copper (Cu) plate. Such findings were achieved through comparisons of T gas and the temperature on the Cu (T Cu ) plate in the conditions with and without discharge ignition, as well as comparing T gas in the free gas/jet mode with and without discharge ignition. It was verified that the T gas values increased as the distance from the gas outlet was enlarged, especially at low He flow rates, even without discharge ignition. Despite the temperature increase with distance, it is possible to produce plasma jets with temperatures lower than 40 °C at low He flow rates.en
dc.description.affiliationFaculty of Engineering in Guaratinguetá São Paulo State University-UNESP
dc.description.affiliationZIK plasmatis Leibniz Institute for Plasma Science and Technology-INP
dc.description.affiliationUnespFaculty of Engineering in Guaratinguetá São Paulo State University-UNESP
dc.identifierhttp://dx.doi.org/10.1088/1402-4896/accb17
dc.identifier.citationPhysica Scripta, v. 98, n. 5, 2023.
dc.identifier.doi10.1088/1402-4896/accb17
dc.identifier.issn1402-4896
dc.identifier.issn0031-8949
dc.identifier.scopus2-s2.0-85152769885
dc.identifier.urihttp://hdl.handle.net/11449/249867
dc.language.isoeng
dc.relation.ispartofPhysica Scripta
dc.sourceScopus
dc.subjectlow temperature plasma
dc.subjectplasma jet
dc.subjectplasma medicine
dc.titleOn the gas heating effect of helium atmospheric pressure plasma jeten
dc.typeArtigo
unesp.author.orcid0000-0002-8641-9894 0000-0002-8641-9894[1]
unesp.author.orcid0000-0002-5184-257X[2]
unesp.author.orcid0000-0002-9821-8088[3]
unesp.departmentFísica e Química - FEGpt

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Guaratinguetá - FEG - Faculdade de Engenharia e Ciências