J/ApJ/743/206ivo://CDS.VizieR/J/ApJ/743/206doi:10.26093/cds/vizier.17430206CDSTayal S.S.Zatsarinny O.2013-08-08T08:32:36Z2013-07-23T11:54:06ZCDS support team

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

cds-question@unistra.fratomic-physicsNew extensive calculations are reported for electron collision strengths, rate coefficients, and transition probabilities for the astrophysically important lines of FeVIII. The collision strengths have been calculated in the close-coupling approximation using the B-spline Breit-Pauli R-matrix method (BSR) code (Zatsarinny 2006CoPhC.174..273Z). The multiconfiguration Hartree-Fock method with term-dependent non-orthogonal orbitals is employed for an accurate representation of the target wave functions. The close-coupling expansion includes 102 fine-structure levels of FeVIII covering all possible terms of the ground 3p^6^3d and singly excited 3p^5^3d^2^, 3p^6^4l, 3p^5^3d4s, 3s3p^6^3d^2^, and 3p^6^5l configurations. The present calculations are more extensive than the previous ones, leading to a total 5151 transitions between fine-structure levels. The effective collision strengths are obtained by averaging the electron collision strengths over a Maxwellian distribution of velocities and these are tabulated for all fine-structure transitions at electron temperatures in the range from 5x10^3^ to 5x10^6^K. There is an overall good agreement with the previous 77-state calculations by Griffin, Pindzola, & Badnell (2000A&AS..142..317G), but significant differences are also noted for some transitions.2011ApJ...743..206Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/743/206CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/537/A22 : Atomic data for X-ray lines of FeVIII and FeIX (O'Dwyer+, 2012)J/ApJS/188/32 : Breit-Pauli transition probabilities for SII (Tayal+, 2010)J/A+A/457/721 : IRON Project. LXII. Fe XVIII transitions (Nahar, 2006)J/A+A/385/716 : N-like and O-like Breit-Pauli energy levels (Tachiev+, 2002)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/743/206https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/743/206http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/743/206https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/743/206https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/743/206http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/743/206GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/ApJ/743/206/table2Level energies (eV) and lifetimes (s) for FeVIIIConfConfigurationphys.atmol.configuration;instr.setuprecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIndex[1/102] Index numbermeta.idintLSJLSJ levelphys.atmol.qnEexp? Experimental excitation energy based mainly on Ramonas & Ryabtsev (1980OptSp..48..348R) unless flaggedeVphys.atmol.excitationfloatnullabler_Eexp[cd] Reference flag on Eexp (1)meta.ref;pos.framecharTargetAdjusted energyeVphys.energy;phys.atmol.excitationfloatPrsntab initio energy ("Present")eVphys.energy;phys.atmol.excitationfloatDiff1? Difference between "Eexp" and "Prsnt"eVstat.fit.omc;phys.energyfloatnullableG00? Energy from Griffin et al. (2000A&AS..142..317G)eVphys.energy;phys.atmol.excitationfloatnullableDiff2? Difference between "G00" and "Eexp"eVstat.fit.omc;phys.energyfloatnullableD09? Energy from Del Zanna (2009A&A...508..513D)eVphys.energy;phys.atmol.excitationfloatnullableDiff3? Difference between "D09" and "Eexp"eVstat.fit.omc;phys.energyfloatnullableLifeT? Lifetime of the excited levelsphys.atmol.lifetime;phys.atmol.leveldoublenullableJ/ApJ/743/206/table3Line strengths, oscillator strengths, and transition probabilities for E1 transitions in FeVIIISLine strengthspect.line.intensitydoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordinti[1/101] Lower levelmeta.idintk[2/102] Upper levelmeta.idintlambda[97/38316] Wavelength {lambda} in Angstroms0.1nmem.wldoublefikOscillator strengthphys.atmol.oscStrengthdoubleAkiTransition probabilitys**-1phys.atmol.transProbdoubleJ/ApJ/743/206/table5Effective collision strengths for transitions in FeVIIIrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordinti[1/101] Lower levelmeta.idintk[2/102] Upper levelmeta.idintCS0.5Effective collision strength at 5000Kphys.atmol.collStrengthdoubleCS1Effective collision strength at 10000Kphys.atmol.collStrengthdoubleCS2.5Effective collision strength at 25000Kphys.atmol.collStrengthdoubleCS5Effective collision strength at 50000Kphys.atmol.collStrengthdoubleCS10Effective collision strength at 100000Kphys.atmol.collStrengthdoubleCS25Effective collision strength at 250000Kphys.atmol.collStrengthdoubleCS50Effective collision strength at 500000Kphys.atmol.collStrengthdoubleCS100Effective collision strength at 1000000Kphys.atmol.collStrengthdoubleCS250Effective collision strength at 2500000Kphys.atmol.collStrengthdoubleCS500Effective collision strength at 5000000Kphys.atmol.collStrengthdouble