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Fundamental parameters related to selenium kα and kβ emission x-ray spectra

2021-03Artigo científico Acesso aberto
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dc.contributor.authorGuerra, Mauro
dc.contributor.authorSampaio, Jorge M.
dc.contributor.authorVília, Gonçalo R.
dc.contributor.authorGodinho, César A.
dc.contributor.authorPinheiro, Daniel
dc.contributor.authorAmaro, Pedro
dc.contributor.authorMarques, José P.
dc.contributor.authorMachado, Jorge
dc.contributor.authorIndelicato, Paul
dc.contributor.authorParente, Fernando
dc.contributor.authorSantos, José Paulo
dc.contributor.institutionLIBPhys-UNL
dc.contributor.institutionDF – Departamento de Física
dc.contributor.pblMDPI - Multidisciplinary Digital Publishing Institute
dc.date.accessioned2021-10-04T23:15:47Z
dc.date.available2021-10-04T23:15:47Z
dc.date.issued2021-03
dc.descriptionUID/FIS/04559/2020 UID/MULTI/04046/2020 No. 17FUN02MetroMMC
dc.description.abstractWe present relativistic ab initio calculations of fundamental parameters for atomic selenium, based on the Multiconfiguration Dirac-Fock method. In detail, fluorescence yields and subshell linewidths, both of K shell, as well as Kβ to Kα intensity ratio are provided, showing overall agreement with previous theoretical calculations and experimental values. Relative intensities were evaluated assuming the same ionization cross-section for the K-shell hole states, leading to a statistical distribution of these initial states. A method for estimating theoretical linewidths of X-ray lines, where the lines are composed by a multiplet of fine-structure levels that are spread in energy, is proposed. This method provides results that are closer to Kα1,2 experimental width values than the usual method, although slightly higher discrepancies occur for the Kβ1,3 lines. This indicates some inaccuracies in the calculation of Auger rates that have a higher contribution for partial linewidths of the subshells involved in the Kβ1,3 profile. Apart from this, the calculated value of Kβ to Kα intensity ratio, which is less sensitive to Auger rates issues, is in excellent agreement with recommended values.en
dc.description.versionpublishersversion
dc.description.versionpublished
dc.format.extent10
dc.format.extent526187
dc.identifier.doi10.3390/atoms9010008
dc.identifier.issn2218-2004
dc.identifier.otherPURE: 27916113
dc.identifier.otherPURE UUID: 5561513e-e9ae-4f7f-8a52-518c22f5fc74
dc.identifier.otherScopus: 85099991835
dc.identifier.otherWOS: 000633024900001
dc.identifier.otherORCID: /0000-0001-6286-4048/work/100976666
dc.identifier.otherORCID: /0000-0002-5890-0971/work/100976769
dc.identifier.urihttp://hdl.handle.net/10362/125599
dc.identifier.urlhttps://www.scopus.com/pages/publications/85099991835
dc.language.isoeng
dc.peerreviewedyes
dc.relationinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FFIS-AQM%2F31969%2F2017/PT
dc.subjectAtomic fundamental parameters
dc.subjectFluorescence yields
dc.subjectHigh-accuracy spectra simulation
dc.subjectSelenium
dc.subjectX-rays
dc.subjectAtomic and Molecular Physics, and Optics
dc.subjectNuclear and High Energy Physics
dc.subjectCondensed Matter Physics
dc.titleFundamental parameters related to selenium kα and kβ emission x-ray spectraen
dc.typejournal article
degois.publication.firstPage1
degois.publication.issue1
degois.publication.lastPage10
degois.publication.titleAtoms
degois.publication.volume9
dspace.entity.typePublication
oaire.awardNumberPTDC/FIS-AQM/31969/2017
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FFIS-AQM%2F31969%2F2017/PT
oaire.fundingStream3599-PPCDT
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccess
relation.isProjectOfPublication5998b5fd-1cd5-4b97-88ac-c09a0f25c128
relation.isProjectOfPublication.latestForDiscovery5998b5fd-1cd5-4b97-88ac-c09a0f25c128

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