J/A+A/365/268ivo://CDS.VizieR/J/A+A/365/268doi:10.26093/cds/vizier.33650268CDSBautista M.2004-11-24T13:00:04Z2004-11-24T13:59:49ZCDS support team

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

cds-question@unistra.fratomic-physicsThis paper reports R-matrix calculations of electron impact excitation rates for Ni III. The calculation includes 70 LS terms corresponding to the configurations 3d^8^, 3d^7^4s, 3d^7^4p, and 3d^6^4s^2^. This expansion results in 162 fine structure levels and 13041 transitions, including optical, infrared, and ultraviolet lines. The collision strengths, including detailed resonance structures, were integrated over a Maxwellian distribution of electron energies and the resulting effective collision strengths are given for a wide range of temperatures. A collisional-radiative equilibrium model of the Ni III ion is constructed and the strongest lines in the optical and infrared spectral regions are identified. The emissivities of these lines and emissivity line ratio diagnostics are presented.2001A&A...365..268Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/365/268CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+AS/103/273 : IRON Project II IR collision strengths of C-like ionsJ/A+A/283/319 : IRON Project III B-like ionsJ/A+AS/108/1 : IRON Project V Collision strengths of O-like ionsJ/A+A/293/953 : IRON Project VI Fe II collision strengthsJ/A+A/293/967 : IRON Project VII Fe II radiative transitionsJ/A+AS/109/193 : IRON Project VIII Electron excitation of Ti-like ionsJ/A+AS/119/509 : IRON Project XVII Radiative transition in Fe IIIJ/A+AS/119/523 : IRON Project XVIII Electron impact for Fe IIIJ/A+AS/120/361 : IRON Project XIX Fe II radiative transitionsJ/A+AS/123/159 : IRON Project XXII C and O radiative ratesJ/A+AS/123/575 : IRON Project XXIII Fe XXII excitation rate coefficientsJ/A+AS/126/373 : IRON Project XXVII Fe IV collision strengthsJ/A+AS/131/499 : IRON Project XXIX Boron isoelectronic sequenceJ/A+AS/131/153 : IRON Project XXXI Fe XII electron excitationJ/A+AS/135/347 : IRON Project XXXV Fe XXIV & Fe XXV oscillator strengthsJ/A+AS/136/395 : IRON Project XXXVII Fe VI collision strengthsJ/A+AS/137/165 : IRON Project XXXVIII Fe XV fine-structure transitionsJ/A+AS/143/483 : IRON Project XLII Fe XXI electron impact excitationJ/A+AS/144/141 : IRON Project XLIII Fe V transition probabilitiesJ/A+AS/147/111 : IRON Project XLIV Fe VI trans. prob. & line ratioJ/A+AS/147/253 : IRON Project XLV Ar XIII, Fe XXI trans. probabilitiesJ/A+A/372/1078 : IRON Project XLIX Fe XX electron impact excitationJ/A+A/372/1083 : IRON Project L Fe XIX electron impact excitationJ/A+A/394/753 : IRON Project LI Fe IX electron impact excitationJ/A+A/408/789 : IRON Project LIII Fe XVII transition probabilitiesJ/A+A/413/779 : IRON Project LIV Fe XX transition probabilitiesJ/A+A/420/763 : IRON Project LV Ni II electron impact excitationJ/A+A/437/345 : IRON Project LIX Fe IV transition probabilitiesJ/A+A/448/779 : IRON Project LXI Fe IV radiative transitionsJ/A+A/457/721 : IRON Project LXII Fe XVIII allowed and forbidden trans.J/A+A/466/763 : IRON Project LXIII Fe^19+^ electron impact excitationhttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/365/268https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/365/268http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/365/268https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/365/268https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/365/268http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/365/268GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/365/268/table1Energy levels in Rydbergs for the Ni III ion relative to the 3d^8^ (^3^F) ground state.recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIndex[1/70] Indexmeta.idintprimaryLevelLevelphys.atmol.configurationExpExperimentallly determined energyRyphys.energy;phys.atmol.leveldoublePresPresent calculated energy (1)Ryphys.energy;phys.atmol.leveldoubleWB? Watts & Burke (WB) calculated energy (1)Ryphys.energy;phys.atmol.levelfloatnullableJ/A+A/365/268/table2Comparison between present and NIST radiative transition rates (A-values) for allowed transitions.recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTransTransitionmeta.id;phys.atmol.transitionNISTNIST radiative transition rates (A-values)1e+08s**-1phys.atmol.transProbfloatPresentPresent radiative transition rates (A-values)1e+08s**-1phys.atmol.transProbfloatJ/A+A/365/268/table3Comparison of effective collision strengths in LS coupling at T=10^4^K for excitations from the ground term to the first 51 excited terms.recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIndex[2/52] Indexmeta.idintFinalFinal statemeta.id;phys.eosG(52CC)Effective collision strengths for (52CC)phys.atmol.collStrengthfloatG(70CC)Effective collision strengths for (70CC)phys.atmol.collStrengthfloatG(70CC)/G(52CC)Ratio G(70CC)/G(52CC)phys.atmol.collStrengthfloatJ/A+A/365/268/table4Comparison of effective collision strengths in LS coupling from the present calculation and those of WB.recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTransTransition (1)meta.id;phys.atmol.transitioncharP5000KPresent effective collision strength at 5000Kphys.atmol.collStrengthfloatWB5000KWB effective collision strength at 5000Kphys.atmol.collStrengthfloatP10000KPresent effective collision strength at 10000Kphys.atmol.collStrengthfloatWB10000KWB effective collision strength at 10000Kphys.atmol.collStrengthfloatP20000KPresent effective collision strength at 20000Kphys.atmol.collStrengthfloatWB20000KWB effective collision strength at 20000Kphys.atmol.collStrengthfloatJ/A+A/365/268/table5Line emissivities for the strongest optical and IR Ni III lines.recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTTemperatureKphys.temperaturefloatNeElectron densitycm**-3phys.densityfloatj(l6000)Emissivity per Ni^2+^ ion of the {lambda}6000 line1e-07Wphys.emissivitydoubleI(7.3um)7.3{mu}m line emissivity (1)phys.emissivitydoubleI(11um)11{mu}m line emissivity (1)phys.emissivitydoubleI(l7889){lambda}7889 line emissivity (1)phys.emissivitydoubleI(l8499){lambda}8499 line emissivity (1)phys.emissivitydoubleI(l6533){lambda}6533 line emissivity (1)phys.emissivitydoubleI(l6401){lambda}6401 line emissivity (1)phys.emissivitydoubleI(l4326){lambda}4326 line emissivity (1)phys.emissivitydoubleI(l4596){lambda}4596 line emissivity (1)phys.emissivitydouble