J/A+A/486/629ivo://CDS.VizieR/J/A+A/486/629doi:10.26093/cds/vizier.34860629CDSTayal S.S.2009-12-11T07:11:54Z2009-12-11T08:04:25ZCDS support team

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

cds-question@unistra.fratomic-physicsOscillator strengths and electron impact excitation collision strengths for CII lines among the fine-structure levels are calculated. Thermally averaged collision strengths are presented as a function of electron temperature for application to astrophysical plasmas. An accurate description of the target wave functions has been obtained in the multiconfiguration Hartree-Fock approach with flexible non-orthogonal orbitals. The 42 fine-structure levels of the 2s^2^2p, 2s2p^2^, 2s^2^3l (l=0-2), 2p^3^, 2s^2^4l (l=0-3), 2s2p3s and 2s^2^5l (l=0-2) configurations have been included in the scattering calculation. A second calculation with lowest 35 levels in the close-coupling expansion has also been carried out to check channel coupling effects on collision strengths. The continuum functions have been represented by the use of B-spline basis. The B-spline R-matrix method in the framework of Breit-Pauli approximation has been used to investigate the electron impact excitation of forbidden and allowed transitions in CII.2008A&A...486..629Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/486/629CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/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/A+A/486/629https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/486/629http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/486/629https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/486/629https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/486/629http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/486/629GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/486/629/table4Oscillator strengths and transition probabilities for dipole-allowed fine-structure transitions in C II. Comparison is made with the calculation of Tachiev & Froese Fischer (2000, J. Phys. B33, 2319)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTransTransitionmeta.id;phys.atmol.transition2JJ value for the lower level of the transitionphys.atmol.qnint2J'J value for the upper level of the transitionphys.atmol.qnintlambdaWavelength of the transition0.1nmem.wl;phys.atmol.transitiondoublefLPresent length value of oscillator strengthphys.atmol.oscStrengthdoublefVPresent velocity value of oscillator strengthphys.veloc;phys.atmol.oscStrengthdoubleALPresent length value of transition probabilitys**-1phys.atmol.transProbdoubleAVPresent velocity value of transition probabilityphys.atmol.transProbdoublefLTFF? Length oscillator strength of Tachiev & Froese Fischer (2000, J. Phys. B33, 2319)phys.atmol.oscStrengthdoublenullableALTFF? Length transition probability of Tachiev & Froese Fischer (2000, J. Phys. B33, 2319)phys.atmol.transProbdoublenullableJ/A+A/486/629/levelIndex and the corresponding levelrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIndex[1,37] Indexmeta.idintLevelLevelmeta.id;phys.atmol.levelJ/A+A/486/629/table5Effective collision strengths for fine-structure transitions in C IIrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordinti[1,36] i lower level index of the transitionmeta.idintj[2,37] j upper level index of the transitionmeta.idintlambda? Wavelength of the transition0.1nmem.wl;phys.atmol.transitiondoublenullableECS1E+3Effective collision strength at Te=1000Kphys.atmol.collStrengthfloatECS2E+3Effective collision strength at Te=2000Kphys.atmol.collStrengthfloatECS3E+3Effective collision strength at Te=3000Kphys.atmol.collStrengthfloatECS5E+3Effective collision strength at Te=5000Kphys.atmol.collStrengthfloatECS1E+4Effective collision strength at Te=10000Kphys.atmol.collStrengthfloatECS2E+4Effective collision strength at Te=20000Kphys.atmol.collStrengthfloatECS3E+4Effective collision strength at Te=30000Kphys.atmol.collStrengthfloatECS5E+4Effective collision strength at Te=50000Kphys.atmol.collStrengthfloatECS1E+5Effective collision strength at Te=100000Kphys.atmol.collStrengthdoubleECS2E+5Effective collision strength at Te=200000Kphys.atmol.collStrengthdoubleECS4E+5Effective collision strength at Te=400000Kphys.atmol.collStrengthdouble