Influence of gas discharge parameters on emissions from a dielectric barrier discharge excited argon excimer lamp

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dc.contributor.authorBaricholo, Peteren_ZA
dc.contributor.authorHlatywayo, Dumisani J.en_ZA
dc.contributor.authorVon Bergmann, Hubertus M.en_ZA
dc.contributor.authorStehmann, Timoen_ZA
dc.contributor.authorRohwer, Ericken_ZA
dc.contributor.authorCollier, Mikeen_ZA
dc.date.accessioned2012-01-18T08:06:29Z
dc.date.available2012-01-18T08:06:29Z
dc.date.issued2011-11
dc.descriptionThe original publication is available at http://www.sajs.co.za/en_ZA
dc.description.abstractA dielectric barrier discharge excited neutral argon (Ar I) excimer lamp has been developed and characterised. The aim of this study was to develop an excimer lamp operating at atmospheric pressure that can replace mercury lamps and vacuum equipment used in the sterilisation of medical equipment and in the food industry. The effects of discharge gas pressure, flow rate, excitation frequency and pulse width on the intensity of the Ar I vacuum ultraviolet (VUV) emission at 126 nm and near infrared (NIR) lines at 750.4 nm and 811.5 nm have been investigated. These three lines were chosen as they represent emissions resulting from deexcitation of excimer states that emit energetic photons with an energy of 9.8 eV. We observed that the intensity of the VUV Ar2* excimer emission at 126 nm increased with increasing gas pressure, but decreased with increasing excitation pulse frequency and pulse width. In contrast, the intensities of the NIR lines decreased with increasing gas pressure and increased with increasing pulse frequency and pulse width. We have demonstrated that energetic VUV photons of 9.8 eV can be efficiently generated in a dielectric barrier discharge in Ar.en_ZA
dc.format.extent7 p. : ill.
dc.identifier.citationBaricholo, P. et al. 2011. Influence of gas discharge parameters on emissions from a dielectric barrier discharge excited argon excimer lamp. South African Journal of Science, 107(11/12), doi.org/10.4102/sajs.v107i11/12.581.
dc.identifier.issn1996-7489 (online)
dc.identifier.issn0038-2353 (print)
dc.identifier.otherdoi:10.4102/sajs.v107i11/12.581
dc.identifier.urihttp://hdl.handle.net/10019.1/19010
dc.publisherASSAF -- Academy of Science of South Africaen_ZA
dc.rights.holderAuthors retain copyrighten_ZA
dc.subjectAtmospheric pressure
dc.subjectElectric discharges through gases
dc.subjectExcimer lasersen_ZA
dc.subjectVacuum ultraviolet spectroscopyen_ZA
dc.subjectGas emissionen_ZA
dc.titleInfluence of gas discharge parameters on emissions from a dielectric barrier discharge excited argon excimer lampen_ZA
dc.typeArticleen_ZA
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