dc.contributor.author | Tarvainen, Olli | |
dc.contributor.author | Toivanen, Ville | |
dc.contributor.author | Komppula, Jani | |
dc.contributor.author | Kalvas, Taneli | |
dc.contributor.author | Koivisto, Hannu | |
dc.date.accessioned | 2016-01-25T12:21:53Z | |
dc.date.available | 2016-01-25T12:21:53Z | |
dc.date.issued | 2014 | |
dc.identifier.citation | Tarvainen, O., Toivanen, V., Komppula, J., Kalvas, T., & Koivisto, H. (2014). Transverse distribution of beam current oscillations of a 14 GHz electron cyclotron resonance ion source. <i>Review of Scientific Instruments</i>, <i>85</i>(2), Article 02A909. <a href="https://doi.org/10.1063/1.4826539" target="_blank">https://doi.org/10.1063/1.4826539</a> | |
dc.identifier.other | CONVID_23705323 | |
dc.identifier.other | TUTKAID_62034 | |
dc.identifier.uri | https://jyx.jyu.fi/handle/123456789/48455 | |
dc.description.abstract | The temporal stability of oxygen ion beams has been studied with the 14 GHz A-ECR at JYFL
(University of Jyvaskyla, Department of Physics). A sector Faraday cup was employed to measure
the distribution of the beam current oscillations across the beam profile. The spatial and temporal
characteristics of two different oscillation “modes” often observed with the JYFL 14 GHz ECRIS are
discussed. It was observed that the low frequency oscillations below 200 Hz are distributed almost
uniformly. In the high frequency oscillation “mode,” with frequencies >300 Hz at the core of the
beam, carrying most of the current, oscillates with smaller amplitude than the peripheral parts of the
beam. The results help to explain differences observed between the two oscillation modes in terms
of the transport efficiency through the JYFL K-130 cyclotron. The dependence of the oscillation
pattern on ion source parameters is a strong indication that the mechanisms driving the fluctuations
are plasma effects. | |
dc.language.iso | eng | |
dc.publisher | American Institute of Physics | |
dc.relation.ispartofseries | Review of Scientific Instruments | |
dc.subject.other | transverse distribution | |
dc.subject.other | beam current oscillations | |
dc.title | Transverse distribution of beam current oscillations of a 14 GHz electron cyclotron resonance ion source | |
dc.type | article | |
dc.identifier.urn | URN:NBN:fi:jyu-201601251261 | |
dc.contributor.laitos | Fysiikan laitos | fi |
dc.contributor.laitos | Department of Physics | en |
dc.contributor.oppiaine | Fysiikka | fi |
dc.contributor.oppiaine | Kiihdytinlaboratorio | fi |
dc.contributor.oppiaine | Physics | en |
dc.contributor.oppiaine | Accelerator Laboratory | en |
dc.type.uri | http://purl.org/eprint/type/JournalArticle | |
dc.date.updated | 2016-01-25T04:15:04Z | |
dc.type.coar | http://purl.org/coar/resource_type/c_2df8fbb1 | |
dc.description.reviewstatus | peerReviewed | |
dc.relation.issn | 0034-6748 | |
dc.relation.numberinseries | 2 | |
dc.relation.volume | 85 | |
dc.type.version | publishedVersion | |
dc.rights.copyright | © 2013 AIP Publishing LLC. Published in this repository with the kind permission of the publisher. | |
dc.rights.accesslevel | openAccess | fi |
dc.relation.doi | 10.1063/1.4826539 | |
dc.type.okm | A1 | |