J/A+A/567/A18ivo://CDS.VizieR/J/A+A/567/A18doi:10.26093/cds/vizier.35670018CDSDel Zanna G.Storey P.J.MasonH.E.2015-01-01T10:25:38Z2014-07-04T10:18:31ZCDS support team

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

cds-question@unistra.fratomic-physicsWe present the first R-matrix scattering calculation for electron collisional excitation of NiXV. The large-scale target includes configurations up to n=4. The calculations were carried out using the intermediate-coupling frame transformation method (ICFT). Significant enhancements in the collision strengths, compared to previous distorted wave (DW) calculations, are found for several cases, in particular the forbidden lines within the ground configuration and the 3s^2^ 3p 4s levels. We provide a complete set of rates and a list of strongest lines that are observable in astrophysical plasmas. Previous identifications are reviewed, and a few new ones suggested. The new data can be used to accurately measure electron densities for high-temperature (3MK) plasmas, and the nickel abundance.2014A&A...567A..18Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/567/A18CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+AS/119/99 : [NiI] + [NiII] transition probabilities (Quinet+, 1996)J/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 : NiXI radiative and excitation rates (Aggarwal+, 2007)J/A+A/488/365 : NiXIX 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/A+A/566/A123 : Ni XI electron collisional excitation (Del Zanna+, 2014)J/A+A/541/A90 : FeX soft X-ray lines (Del Zanna+, 2012)J/A+A/543/A139 : FeXII soft X-ray lines (Del Zanna+, 2012)J/A+A/543/A144 : FeXIII soft X-ray lines (Del Zanna+, 2012)J/A+A/549/A42 : FeXI soft X-ray lines (Del Zanna+, 2013)J/A+A/565/A77 : Atomic data for FeIX (Del Zanna+, 2014)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/567/A18https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/567/A18http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/567/A18https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/567/A18https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/567/A18http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/567/A18GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/567/A18/table1Level energies of the RM4 calculationIndex[1/483] Level indexmeta.idintprimaryLevelLevel descriptionmeta.note;phys.atmol.levelchar2S+1[1/5] Spin 2S+1 multiplicityphys.atmol.qnintL[0/6] L valuephys.atmol.qnintJ[0/6] J valuephys.atmol.qnfloatELevel energy (ab initio)cm**-1phys.energy;phys.atmol.leveldoubleJ/A+A/567/A18/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[2/483] Upper level index of the transitionmeta.idintj[1/482] Lower level index of the transitionmeta.idintAEinstein A coefficients**-1phys.atmol.transProbdoubleCS1Averaged collision strength at T=4.50x10^4^Kphys.atmol.collStrengthdoubleCS2Averaged collision strength at T=1.12x10^5^Kphys.atmol.collStrengthdoubleCS3Averaged collision strength at T=2.25x10^5^Kphys.atmol.collStrengthdoubleCS4Averaged collision strength at T=4.50x10^5^Kphys.atmol.collStrengthdoubleCS5Averaged collision strength at T=1.12x10^6^Kphys.atmol.collStrengthdoubleCS6Averaged collision strength at T=2.25x10^6^Kphys.atmol.collStrengthdoubleCS7Averaged collision strength at T=4.50x10^6^Kphys.atmol.collStrengthdoubleCS8Averaged collision strength at T=1.12x10^7^Kphys.atmol.collStrengthdoubleCS9Averaged collision strength at T=2.25x10^7^Kphys.atmol.collStrengthdoubleCS10Averaged collision strength at T=4.50x10^7^Kphys.atmol.collStrengthdoubleElimHigh-energy limitphys.energy;phys.atmol.leveldouble