J/A+A/585/A118ivo://CDS.VizieR/J/A+A/585/A118doi:10.26093/cds/vizier.35850118CDSDel Zanna G.Badnell N.R.2016-01-06T06:45:08Z2016-01-06T07:44:45ZCDS support team

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

cds-question@unistra.fratomic-physicsWe present new large-scale R-matrix (up to n=4) scattering calculations for the electron collisional excitation of Cl-like NiXII. We used the intermediate-coupling frame transformation method. We compare predicted and observed line intensities using laboratory and solar spectra, finding good agreement for all the main soft X-ray lines. With the exception of the three strongest transitions, large discrepancies with previous estimates are found, especially for the decays from the lowest 3s2 3p4 3d levels. This includes the forbidden UV lines. The atomic data for the n = 4 levels are the first to be calculated. We revise previous experimental energies, and suggest several new identifications. We point out the uncertainty in the wavelength of the 3s2 3p5 2P1/2 3s2 3p4 3d 2D3/2 transition, which is important for density diagnostics.2016A&A...585A.118Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/585/A118CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/365/268 : IRON Project. XLVII. Ni III (Bautista, 2001)J/A+A/460/959 : Ni XIX radiative and excitation rates (Aggarwal+, 2006)J/A+A/475/393 : Ni XI radiative and excitation rates (Aggarwal+, 2007)J/A+A/488/365 : Ni XIX effective collision strengths (Aggarwal+, 2008)J/A+A/488/1155 : Ni XXV energy levels and radiative rates (Duan+, 2008)J/A+A/513/A55 : Effective collision strengths of Ni II (Cassidy+, 2010)J/A+A/537/A12 : Effective collision strength of Ni XVII (Hudson+, 2012)J/ApJ/738/5 : Effective collision strengths in NiII (Cassidy+, 2011)J/A+A/566/A123 : Ni XI electron collisional excitation (Del Zanna+, 2014)J/A+A/567/A18 : Ni XV electron collisional excitation (Del Zanna+, 2014)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/585/A118https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/585/A118http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/585/A118https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/585/A118https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/585/A118http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/585/A118GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/585/A118/table1Level energies of the RM4 calculationJ[0/7] J valuephys.atmol.qnfloatL[0/6] L valuephys.atmol.qnintIndexLevel indexmeta.idintprimaryLevelLevel descriptionmeta.note;phys.atmol.levelchar2S+1[2/6] 2S+1 multiplicityphys.atmol.qnintETarget energy (ab initio)cm**-1phys.energy;phys.atmol.leveldoubleJ/A+A/585/A118/table2Transition probabilities and thermally averaged collision strengths for the RM4 calculationrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordinti[2/589] Upper level index of the transitionmeta.idintj[1/588] Lower level index of the transitionmeta.idintAEinstein A coefficients**-1phys.atmol.transProbdoubleCS1Averaged collision strength at T=2.88x10^4^Kphys.atmol.collStrengthdoubleCS2Averaged collision strength at T=7.20x10^4^Kphys.atmol.collStrengthdoubleCS3Averaged collision strength at T=1.44x10^5^Kphys.atmol.collStrengthdoubleCS4Averaged collision strength at T=2.88x10^5^Kphys.atmol.collStrengthdoubleCS5Averaged collision strength at T=7.20x10^5^Kphys.atmol.collStrengthdoubleCS6Averaged collision strength at T=1.44x10^6^Kphys.atmol.collStrengthdoubleCS7Averaged collision strength at T=2.88x10^6^Kphys.atmol.collStrengthdoubleCS8Averaged collision strength at T=7.20x10^6^Kphys.atmol.collStrengthdoubleCS9Averaged collision strength at T=1.44x10^7^Kphys.atmol.collStrengthdoubleCS10Averaged collision strength at T=2.88x10^7^Kphys.atmol.collStrengthdoubleElimHigh-energy limitphys.energy;phys.atmol.leveldouble