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dc.contributor.authorAleiferis, S.
dc.contributor.authorLaulainen, Janne
dc.contributor.authorSvarnas, P.
dc.contributor.authorTarvainen, Olli
dc.contributor.authorBacal, M.
dc.contributor.authorBéchu, S.
dc.contributor.editorFaircloth, Dan
dc.date.accessioned2017-09-06T07:04:29Z
dc.date.available2018-09-02T21:35:34Z
dc.date.issued2017
dc.identifier.citationAleiferis, S., Laulainen, J., Svarnas, P., Tarvainen, O., Bacal, M., & Béchu, S. (2017). VUV emission spectroscopy combined with H− density measurements in the ion source Prometheus I. In D. Faircloth (Ed.), <i>NIBS 2016 : Fifth International Symposium on Negative Ions, Beams and Sources</i> (Article 030045). AIP Publishing. AIP Conference Proceedings, 1869. <a href="https://doi.org/10.1063/1.4995765" target="_blank">https://doi.org/10.1063/1.4995765</a>
dc.identifier.isbn978-0-7354-1549-2
dc.identifier.otherCONVID_27188190
dc.identifier.otherTUTKAID_74817
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/55281
dc.description.abstract“Prometheus I” is a volume H− negative ion source, driven by a network of dipolar electron cyclotron resonance (ECR; 2.45 GHz) modules. The vacuum-ultraviolet (VUV) emission spectrum of low-temperature hydrogen plasmas may be related to molecular and atomic processes involved directly or indirectly in the production of negative ions. In this work, VUV spectroscopy has been performed in the above source, Prometheus I, both in the ECR zones and the bulk (far from ECR zones and surfaces) plasma. The acquired VUV spectra are correlated with the negative ion densities, as measured by means of laser photodetachment, and the possible mechanisms of negative ion production are considered. The well-established H− formation process of dissociative attachment to vibrationally excited molecules is evaluated, while an additional production path (i.e. neutral resonant ionization) is tested due to the recently attracted interest. The obtained results indicate that for the source Prometheus I, the dominant formation process is dissociative attachment.
dc.language.isoeng
dc.publisherAIP Publishing
dc.relation.ispartofNIBS 2016 : Fifth International Symposium on Negative Ions, Beams and Sources
dc.relation.ispartofseriesAIP Conference Proceedings
dc.subject.otherplasma sources
dc.subject.otherECR ion sources
dc.subject.othervacuum-ultraviolet emission
dc.titleVUV emission spectroscopy combined with H− density measurements in the ion source Prometheus I
dc.typeconferenceObject
dc.identifier.urnURN:NBN:fi:jyu-201709043651
dc.contributor.laitosFysiikan laitosfi
dc.contributor.laitosDepartment of Physicsen
dc.contributor.oppiaineKiihdytinlaboratoriofi
dc.contributor.oppiaineAccelerator Laboratoryen
dc.type.urihttp://purl.org/eprint/type/ConferencePaper
dc.date.updated2017-09-04T09:15:05Z
dc.relation.isbn978-0-7354-1549-2
dc.type.coarhttp://purl.org/coar/resource_type/c_5794
dc.description.reviewstatuspeerReviewed
dc.relation.issn0094-243X
dc.type.versionpublishedVersion
dc.rights.copyright© 2017, AIP Publishing LLC. Published in this repository with the kind permission of the publisher.
dc.rights.accesslevelopenAccessfi
dc.relation.conferenceInternational Symposium on Negative Ions, Beams and Sources
dc.subject.ysoplasmatekniikka
dc.subject.ysosyklotronit
dc.subject.ysoultraviolettisäteily
dc.subject.ysoemissio (fysiikka)
jyx.subject.urihttp://www.yso.fi/onto/yso/p8568
jyx.subject.urihttp://www.yso.fi/onto/yso/p15295
jyx.subject.urihttp://www.yso.fi/onto/yso/p18200
jyx.subject.urihttp://www.yso.fi/onto/yso/p4149
dc.relation.doi10.1063/1.4995765
dc.type.okmA4


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