J/A+A/444/305ivo://CDS.VizieR/J/A+A/444/305doi:10.26093/cds/vizier.34440305CDSLandi E.Bhatia A.K.2005-12-22T12:54:17Z2005-12-22T13:54:09ZCDS support team

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

cds-question@unistra.fratomic-physicsthe-sunultraviolet-astronomyElectron impact collision strengths, energy levels, oscillator strengths and spontaneous radiative decay rates are calculated for Ca XIII. The configurations used are 2s2.2p4, 2s.2p5, 2p6, 2s2.2p3.3s, 2s2.2p3.3p and 2s2.2p3.3d giving rise to 86 fine-structure levels in intermediate coupling. Collision strengths are calculated at five incident energies (40, 80, 120, 160 and 200Ry) in the distorted wave approximation. Excitation rate coefficients are calculated as a function of electron temperature by assuming a Maxwellian electron velocity distribution. Using the excitation rate coefficients and the radiative transition rates, statistical equilibrium equations for level populations are solved at electron densities covering the range of 10^8-10^14cm^-3 at an electron temperature of logTe(K)=6.5, corresponding to maximum abundance of Ca XIII. Relative and absolute spectral line intensities are calculated, and their diagnostic relevance is discussed. This dataset will be made available in the next version of the CHIANTI database.2005A&A...444..305Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/444/305CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/434/365 : A-values + oscillator strength of O-like ions (Landi+, 2005)J/A+A/426/717 : Oscillator strengths for ClII lines (Tayal+, 2004)J/A+A/389/716 : Oscillator strengths for Li-like ions (Nahar, 2002)J/PAZh/28/41 : Eu III oscillator strengths (Masonkina+, 2002)J/ApJS/121/591 : Oscillator Strengths for SIV (Coutinho+, 1999)J/A+AS/130/541 : Co II oscillator strengths (Raassen+ 1998)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/444/305https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/444/305http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/444/305https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/444/305https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/444/305http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/444/305GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapUVdefaultJ/A+A/444/305/table1Atomic data and theoretical and experimental energy levelsConfConfigurationcharSTotal spin momentum SintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIndexIndex of levelintLTotal orbital angular momentum L (in letters)charJ[0/9]? Total angular momentum JintnullableE24Calculated energy - 24 configuration modelcm**-1intE6Calculated energy - 6 configuration modelcm**-1intEobs? Observed energy from the literaturecm**-1intnullableRef[A-F] Source of observed energy (1)charJ/A+A/444/305/table2Oscillator strengths, A values and collision strengths for all transitionsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLowLower level in the transitionintUpUpper level in the transitionintgfWeighted Oscillator StrengthdoubleAvalueEinstein coefficients**-1doubleOmega40Collision strength (E= 40 Ry)doubleOmega80Collision strength (E= 80 Ry)doubleOmega120Collision strength (E=120 Ry)doubleOmega160Collision strength (E=160 Ry)doubleOmega200Collision strength (E=200 Ry)double