J/ApJS/234/13ivo://CDS.VizieR/J/ApJS/234/13doi:10.26093/cds/vizier.22340013CDSSantana J.A.Lopez-Dauphin N.A.Beiersdorfer P.2018-05-16T07:08:15Z2018-04-19T07:48:53ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.fratomic-physicsLevel energies are reported for Si V, Si VI, Si VII, Si VIII, Si IX, Si X, Si XI, and Si XII. The energies have been calculated with the relativistic Multi- Reference Moller-Plesset Perturbation Theory method and include valence and K-vacancy states with nl up to 5f. The accuracy of the calculated level energies is established by comparison with the recommended data listed in the National Institute of Standards and Technology (NIST) online database. The average deviation of valence level energies ranges from 0.20eV in SiV to 0.04eV in SiXII. For K-vacancy states, the available values recommended in the NIST database are limited to Si XII and Si XIII. The average energy deviation is below 0.3eV for K-vacancy states. The extensive and accurate data set presented here greatly augments the amount of available reference level energies. We expect our data to ease the line identification of L-shell ions of Si in celestial sources and laboratory-generated plasmas, and to serve as energy references in the absence of more accurate laboratory measurements.2018ApJS..234...13Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/234/13CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+AS/125/149 : CHIANTI- An Atomic Database For Emission Lines I. (Dere+ 1997)J/A+AS/129/155 : Si XI + Si XIII lines Stark broadening (Dimitrijevic+ 1998)J/ApJS/121/591 : Oscillator Strengths for SiVI (Coutinho+, 1999)J/A+A/423/397 : Stark broadening of Si V (Ben Nessib+, 2004)J/A+A/508/1527 : SiII Radiative transition rates (Bautista+, 2009)J/A+A/522/A103 : Si.XI K-shell energy levels and radiative rates (Wei+, 2010)J/A+A/541/A61 : Oscillator and collision strengths for SiVIII (Tayal+, 2012)J/ApJS/207/11 : Fe XVI radiative rates (Diaz+, 2013)J/A+A/559/A100 : Boron isoelectronic sequence data (Jonsson+, 2013)J/A+A/566/A105 : SiIX K-shell energy levels and transitions (Wei+, 2014)J/ApJ/787/2 : Effective collision strengths of Si VII (Sossah+, 2014)J/ApJS/215/26 : Energy levels & transition rates of C-like ions (Wang+, 2014)J/A+A/566/A105 : SiIX K-shell energy levels and transitions (Wei+, 2014)J/ApJS/218/16 : Energy levels & transition rates of Be-like ions (Wang+, 2015)J/A+A/585/A26 : Silicon isoelectronic sequence data (Jonsson+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/234/13https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/234/13http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/234/13https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/234/13https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/234/13http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/234/13GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/ApJS/234/13/table1Valence level energies in L-shell ions of Si evaluatedJJ levelphys.atmol.qncharParityParity; odd/evenphys.atmol.paritycharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintN[3/10] Number of electronsmeta.numberintIndex[1/3900] Level indexmeta.idintConfigThe jj-Configuration (1)meta.notecharEnergy[0/4310] Present MR-MP energieseVphys.energy;phys.atmol.leveldouble