J/ApJ/788/24ivo://CDS.VizieR/J/ApJ/788/24doi:10.26093/cds/vizier.17880024CDSTayal S.S.Zatsarinny O.2017-09-04T08:03:35Z2017-07-10T09:57:09ZCDS support team

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

cds-question@unistra.fratomic-physicsExtensive calculations have been performed for electron impact excitation collision strengths and oscillator strengths for the Fe VII extreme ultraviolet lines of astrophysical importance. The collision strengths for fine-structure transitions are calculated in the B-spline Breit-Pauli R-matrix approach. The target wavefunctions have been calculated in the multiconfiguration Hartree-Fock method with term-dependent non-orthogonal orbitals. The close-coupling expansion includes 189 fine-structure levels of Fe VII belonging to terms of the ground 3p^6^ 3d^2^ and excited 3p^5^ 3d^3^, 3p^6^ 3d4l, 3p^6^ 3d5s, and 3p^6^ 3d5p configurations. The effective collision strengths are determined from the electron excitation collision strengths by integration over a Maxwellian distribution of electron velocities. The effective collision strengths are provided for 17766 fine-structure transitions at electron temperatures from 10^4^ to 10^7^ K. Our results normally agree with the previous R-matrix frame-transformation calculations by Witthoeft & Badnell (2008A&A...481..543W). However, there are important differences for some transitions with the previous calculations. The corrections to the previous results are mainly due to more extensive expansions for the Fe VII target states.2014ApJ...788...24Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/788/24CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/788/24https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/788/24http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/788/24https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/788/24https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/788/24http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/788/24GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/ApJ/788/24/table5Effective Collision Strengths for Transitions in Fe VIICS0.5Effective collision strength at 0.5x10^4^ Kphys.atmol.collStrengthdoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordinti[1/188] Lower levelmeta.noteintk[2/189] Upper levelphys.atmol.levelintCS1.0Effective collision strength at 1.0x10^4^ Kphys.atmol.collStrengthdoubleCS2.5Effective collision strength at 2.5x10^4^ Kphys.atmol.collStrengthdoubleCS5.0Effective collision strength at 5.0x10^4^ Kphys.atmol.collStrengthdoubleCS10Effective collision strength at 1.0x10^5^ Kphys.atmol.collStrengthdoubleCS25Effective collision strength at 2.5x10^5^ Kphys.atmol.collStrengthdoubleCS50Effective collision strength at 5.0x10^5^ Kphys.atmol.collStrengthdoubleCS100Effective collision strength at 1.0x10^6^ Kphys.atmol.collStrengthdoubleCS250Effective collision strength at 2.5x10^6^ Kphys.atmol.collStrengthdoubleCS500Effective collision strength at 5.0x10^6^ Kphys.atmol.collStrengthdoubleCS1000Effective collision strength at 1.0x10^7^ Kphys.atmol.collStrengthdoubleJ/ApJ/788/24/table2Level Energies and Lifetimes for Fe VIIrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIndexIndexmeta.idintConfConfigurationphys.atmol.configuration;instr.setupLSJLS_J termphys.atmol.termExp? NIST expected energy leveleVphys.energy;phys.atmol.levelfloatnullablePresentPresent energy leveleVphys.energy;phys.atmol.levelfloatdP-Exp? Difference between Present and expected energy leveleVphys.energy;arith.difffloatnullableZ05? Zeng et al. (2005MNRAS.357..440Z) energy leveleVphys.energy;phys.atmol.levelfloatnullabledZ-Wxp? Difference between Z05 and expected energy leveleVphys.energy;arith.difffloatnullableWB08? Witthoeft & Badnell (2008A&A...481..543W) energy leveleVphys.energy;phys.atmol.levelfloatnullabledW-Exp? Difference between WB08 and expected energy leveleVphys.energy;arith.difffloatnullableD09? Del Zanna (2009A&A...508..501D) energy leveleVphys.energy;phys.atmol.levelfloatnullableLifetime? Lifetimestime.lifetimedoublenullableJ/ApJ/788/24/table3Line Strengths, Oscillator Strengths, and Transition Probabilities for E1 Transitions in Fe VIIrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordinti[1/154] Lower levelmeta.noteintk[14/189] Upper levelphys.atmol.levelintWaveWavelength; in Angstroms0.1nmem.wldoubleSLine strengthspect.line.intensitydoublefikOscillator strengthphys.atmol.oscStrengthdoubleAkiTransition probabilitys**-1phys.atmol.transProbdouble