J/ApJS/166/634ivo://CDS.VizieR/J/ApJS/166/634doi:10.26093/cds/vizier.21660634CDSTayal S.S.2008-07-29T16:53:18Z2008-07-29T16:50:49ZCDS support team

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

cds-question@unistra.fratomic-physicsElectron collision excitation strengths and rates for infrared and ultraviolet lines arising from transitions between the fine-structure levels of the 2s^2^2p, 2s2p^2^, 2p^3^, 2s^2^3s, 2s^2^3p, 2s^2^3d, 2s2p3s, 2s2p3p, 2s2p3d, 2s^2^4s, and 2s^2^4p configurations of OIV have been calculated using Breit-Pauli R-matrix approach. Configuration-interaction wave functions have been used for an accurate representation of target levels. These wave functions give excitation energies that are in close agreement with experiment. Oscillator strengths and transition probabilities for UV and EUV lines compare very well with previous calculations. The Rydberg series of resonances converging to the excited levels are explicitly included in the scattering calculation and are found to make substantial contribution to collision strengths. The effective collision strengths are obtained by integrating total collision strengths over a Maxwellian distribution of electron energies, and these are presented over a wide temperature range suitable for modeling of astrophysical plasmas. Significant qualitative and quantitative differences with earlier results of effective collision strengths are noted.2006ApJS..166..634Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/166/634CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+AS/109/551 : Stark broadening. XII. OIV + OV (Dimitrijevic+, 1995)J/ApJ/526/544 : Collision strengths in S III (Tayal+, 1999)J/ApJS/123/295 : Electron impact excitation in Fe XI (Gupta+, 1999)J/A+A/418/363 : Effective collision strengths for Cl II (Tayal+, 2004)J/A+A/426/717 : Oscillator strengths for ClII lines (Tayal+, 2004)J/ApJS/163/207 : Oscillator and collision strengths in NI (Tayal+, 2006)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/166/634https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/166/634http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/166/634https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/166/634https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/166/634http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/166/634GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/ApJS/166/634/table1Calculated and experimental excitation energies of O IV energy levelsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIndexIndexmeta.idintTermTerm designationphys.atmol.termJJ valuephys.atmol.qncharEpreEnergy, present resultsRyphys.energydoubleEexpEnergy, experimentalRyphys.energydoubleEdiffDifference of energiesRystat.fit.omc;phys.energydoubleEother? Energy from Correge & Hibbert (2002, J. Phys. B, 35, 1211)Ryphys.energydoublenullableJ/ApJS/166/634/table2Oscillator strengths and transition probabilities in O IVrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTransTransitionmeta.id;phys.atmol.transitionJThe J transitionphys.atmol.qncharJ'The J' transitionphys.atmol.qncharWaveWavelength in units of Angstroms0.1nmem.wl;arith.ratiofloatfLThe present f_L_ valuephys.atmol.oscStrengthdoublefVThe present f_V_ valuephys.atmol.oscStrengthdoubleAkiThe present A_ki_ values**-1phys.atmol.transProbdoublefikW? Wiese et al. (1996, Phys. Chem. Ref. Data Monograph 7) f_ik_ valuephys.atmol.oscStrengthdoublenullableAkiW? Wiese et al. (1996, Phys. Chem. Ref. Data Monograph 7) A_ki_ values**-1phys.atmol.transProbdoublenullableJ/ApJS/166/634/table4Effective Collision Strengths for transitions in O IVrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintii lower level index of the transitionmeta.idintjj upper level index of the transitionmeta.idintWave? Wavelength in units of Angstroms0.1nmem.wl;arith.ratiodoublenullableECS3E+3Effective collision strength at Te= 3000Kphys.atmol.collStrengthfloatECS5E+3Effective collision strength at Te= 5000Kphys.atmol.collStrengthfloatECS7E+3Effective collision strength at Te= 7000Kphys.atmol.collStrengthfloatECS1E+4Effective collision strength at Te= 10000Kphys.atmol.collStrengthfloatECS2E+4Effective collision strength at Te= 20000Kphys.atmol.collStrengthfloatECS3E+4Effective collision strength at Te= 40000Kphys.atmol.collStrengthfloatECS6E+4Effective collision strength at Te= 60000Kphys.atmol.collStrengthfloatECS8E+4Effective collision strength at Te= 80000Kphys.atmol.collStrengthfloatECS1E+5Effective collision strength at Te=100000Kphys.atmol.collStrengthfloatECS2E+5Effective collision strength at Te=200000Kphys.atmol.collStrengthfloatECS4E+5Effective collision strength at Te=400000Kphys.atmol.collStrengthfloat