J/A+A/418/1171ivo://CDS.VizieR/J/A+A/418/1171doi:10.26093/cds/vizier.34181171CDSBautista M.Mendoza C.Kallman T.R.Palmeri P.2004-06-20T20:51:46Z2004-06-20T20:51:36ZCDS support team

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

cds-question@unistra.fratomic-physicsPhotoabsorption cross sections across the K edge of Fe XVIII-Fe XXIII and electron impact K-shell excitation effective collision strengths in Fe XVIII-Fe XXIII have been computed with the Breit-Pauli R-matrix method. The target models are represented with all the fine-structure levels within the n=2 complex, built up from single-electron orbital bases obtained in a Thomas-Fermi-Dirac statistical model potential. The effects of radiation and spectator Auger dampings are taken into account by means of an optical potential. In photoabsorption, these effects cause the resonances converging to the K thresholds to display symmetric profiles of constant width that smear the edge, with important implications in spectral analysis. In collisional excitation, they attenuate resonances making their contributions to the effective collision strength practically negligible.2004A&A...418.1171Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/418/1171CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/436/1131 : Effective collision strengths for Al III (Hudson+ 2005)J/A+A/399/799 : Effective collision strengths for Fe XI (Aggarwal+, 2003)J/A+A/410/349 : Effective collision strengths in Fe XV (Aggarwal+, 2003)J/A+AS/103/273 : Effective collision strengths for C-like ions (Lennon+ 1994)J/A+AS/108/1 : Effective collision strengths for O-like ions (Butler+, 1994)J/A+AS/125/543 : Effective collision strengths for Mg VI (Ramsbottom+ 1997)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/418/1171https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/418/1171http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/418/1171https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/418/1171https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/418/1171http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/418/1171GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/418/1171/table1b*FeXVIII electron impact K-shell excitation effective collision strengthsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonIonisation stagephys.atmol.ionizationintUlevelUpper levelmeta.idintLlevelLower levelmeta.idintAA-values**-1phys.atmol.transProbdoubleECS(6.48E+04)Effective collision strengths at T=6.48E+04Kphys.atmol.collStrengthdoubleECS(1.62E+05)Effective collision strengths at T=1.62E+05Kphys.atmol.collStrengthdoubleECS(3.24E+05)Effective collision strengths at T=3.24E+05Kphys.atmol.collStrengthdoubleECS(6.48E+05)Effective collision strengths at T=6.48E+05Kphys.atmol.collStrengthdoubleECS(1.62E+06)Effective collision strengths at T=1.62E+06Kphys.atmol.collStrengthdoubleECS(3.24E+06)Effective collision strengths at T=3.24E+06Kphys.atmol.collStrengthdoubleECS(6.48E+06)Effective collision strengths at T=6.48E+06Kphys.atmol.collStrengthdoubleECS(1.62E+07)Effective collision strengths at T=1.62+07Kphys.atmol.collStrengthdoubleECS(Inf)High temperature limitphys.atmol.collStrengthdoubleJ/A+A/418/1171/table2b*FeXIX electron impact K-shell excitation effective collision strengthsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonIonisation stagephys.atmol.ionizationintUlevelUpper levelmeta.idintLlevelLower levelmeta.idintAA-values**-1phys.atmol.transProbdoubleECS(7.22E+04)Effective collision strengths at T=7.22E+04Kphys.atmol.collStrengthdoubleECS(1.80E+05)Effective collision strengths at T=1.80E+05Kphys.atmol.collStrengthdoubleECS(3.61E+05)Effective collision strengths at T=3.61E+05Kphys.atmol.collStrengthdoubleECS(7.22E+05)Effective collision strengths at T=7.22E+05Kphys.atmol.collStrengthdoubleECS(1.80E+06)Effective collision strengths at T=1.80E+06Kphys.atmol.collStrengthdoubleECS(3.61E+06)Effective collision strengths at T=3.61E+06Kphys.atmol.collStrengthdoubleECS(7.22E+06)Effective collision strengths at T=7.22E+06Kphys.atmol.collStrengthdoubleECS(1.80E+07)Effective collision strengths at T=1.80+07Kphys.atmol.collStrengthdoubleECS(Inf)High temperature limitphys.atmol.collStrengthdoubleJ/A+A/418/1171/table3bFeXX electron impact K-shell excitation effective collision strengthsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonIonisation stagephys.atmol.ionizationintUlevelUpper levelmeta.idintLlevelLower levelmeta.idintAA-values**-1phys.atmol.transProbdoubleECS(8.00E+04)Effective collision strengths at T=8.00E+04Kphys.atmol.collStrengthdoubleECS(2.00E+05)Effective collision strengths at T=2.00E+05Kphys.atmol.collStrengthdoubleECS(4.00E+05)Effective collision strengths at T=4.00E+05Kphys.atmol.collStrengthdoubleECS(8.00E+05)Effective collision strengths at T=8.00E+05Kphys.atmol.collStrengthdoubleECS(2.00E+06)Effective collision strengths at T=2.00E+06Kphys.atmol.collStrengthdoubleECS(4.00E+06)Effective collision strengths at T=4.00E+06Kphys.atmol.collStrengthdoubleECS(8.00E+06)Effective collision strengths at T=8.00E+06Kphys.atmol.collStrengthdoubleECS(2.00E+07)Effective collision strengths at T=2.00+07Kphys.atmol.collStrengthdoubleECS(Inf)High temperature limitphys.atmol.collStrengthdoubleJ/A+A/418/1171/table4b*FeXXI electron impact K-shell excitation effective collision strengthsECS(Inf)High temperature limitphys.atmol.collStrengthdoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonIonisation stagephys.atmol.ionizationintUlevelUpper levelmeta.idintLlevelLower levelmeta.idintAA-values**-1phys.atmol.transProbdoubleECS(8.82E+04)Effective collision strengths at T=8.82E+04Kphys.atmol.collStrengthdoubleECS(2.20E+05)Effective collision strengths at T=2.20E+05Kphys.atmol.collStrengthdoubleECS(4.41E+05)Effective collision strengths at T=4.41E+05Kphys.atmol.collStrengthdoubleECS(8.82E+05)Effective collision strengths at T=8.82E+05Kphys.atmol.collStrengthdoubleECS(2.20E+06)Effective collision strengths at T=2.20E+06Kphys.atmol.collStrengthdoubleECS(4.41E+06)Effective collision strengths at T=4.41E+06Kphys.atmol.collStrengthdoubleECS(8.82E+06)Effective collision strengths at T=8.82E+06Kphys.atmol.collStrengthdoubleECS(2.20E+07)Effective collision strengths at T=2.20+07Kphys.atmol.collStrengthdoubleJ/A+A/418/1171/table6b*FeXXIII electron impact K-shell excitation effective collision strengthsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonIonisation stagephys.atmol.ionizationintUlevelUpper levelmeta.idintLlevelLower levelmeta.idintAA-values**-1phys.atmol.transProbdoubleECS(1.06E+04)Effective collision strengths at T=1.06E+04Kphys.atmol.collStrengthdoubleECS(2.64E+05)Effective collision strengths at T=2.64E+05Kphys.atmol.collStrengthdoubleECS(5.29E+05)Effective collision strengths at T=5.29E+05Kphys.atmol.collStrengthdoubleECS(1.06E+05)Effective collision strengths at T=1.06E+05Kphys.atmol.collStrengthdoubleECS(2.64E+06)Effective collision strengths at T=2.64E+06Kphys.atmol.collStrengthdoubleECS(5.29E+06)Effective collision strengths at T=5.29E+06Kphys.atmol.collStrengthdoubleECS(1.06E+06)Effective collision strengths at T=1.06E+06Kphys.atmol.collStrengthdoubleECS(2.64E+07)Effective collision strengths at T=2.64+07Kphys.atmol.collStrengthdoubleECS(Inf)High temperature limitphys.atmol.collStrengthdoubleJ/A+A/418/1171/elevelsElectron impact K-shell excitation energy levels for FeXVIII to FeXXIIIZ[26] Nuclear chargephys.atmol.numberintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNionNumber of ionizations (=Ion-1)phys.atmol.ionizationintIonIonisation stage (Nion+1)phys.atmol.ionizationintPotIon potentialcm**-1phys.energy;phys.atmol.leveldoubleLevelLevel numbermeta.idintConfElectron configuration, (2S+1)L( J)phys.atmol.configurationcharELevel energycm**-1phys.energy;phys.atmol.leveldoubleJ/A+A/418/1171/table5b*FeXXII electron impact K-shell excitation effective collision strengthsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonIonisation stagephys.atmol.ionizationintUlevelUpper levelmeta.idintLlevelLower levelmeta.idintAA-values**-1phys.atmol.transProbdoubleECS(9.68E+04)Effective collision strengths at T=9.68E+04Kphys.atmol.collStrengthdoubleECS(2.42E+05)Effective collision strengths at T=2.42E+05Kphys.atmol.collStrengthdoubleECS(4.84E+05)Effective collision strengths at T=4.84E+05Kphys.atmol.collStrengthdoubleECS(9.68E+05)Effective collision strengths at T=9.68E+05Kphys.atmol.collStrengthdoubleECS(2.42E+06)Effective collision strengths at T=2.42E+06Kphys.atmol.collStrengthdoubleECS(4.84E+06)Effective collision strengths at T=4.84E+06Kphys.atmol.collStrengthdoubleECS(9.68E+06)Effective collision strengths at T=9.68E+06Kphys.atmol.collStrengthdoubleECS(2.42E+07)Effective collision strengths at T=2.42+07Kphys.atmol.collStrengthdoubleECS(Inf)High temperature limitphys.atmol.collStrengthdouble