J/A+A/541/A61ivo://CDS.VizieR/J/A+A/541/A61doi:10.26093/cds/vizier.35410061CDSTayal S.S.2015-05-20T14:02:38Z2012-04-27T09:24:31ZCDS 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 transitions between the 68 fine-structure levels of the 2s^2^2p^3^, 2s2p^4^, 2p^5^, 2s^2^2p^2^3s, 2s^2^2p^2^3p, 2s^2^2p^2^3d and 2s2p^3^3s configurations in SiVIII are calculated. Thermally averaged collision strengths are presented as a function of electron temperature for application to solar and other astrophysical plasmas.2012A&A...541A..61Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/541/A61CatalogResearchIsServedByTAP 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/A+A/486/629 : Effective collision strengths for C II (Tayal, 2008)J/ApJS/163/207 : Oscillator and collision strengths in NI (Tayal+, 2006)J/ApJS/166/634 : OIV Effective collision strength (Tayal+, 2006)J/A+A/510/A79 : Effective collision strengths for K II (Tayal+, 2010)J/ApJS/188/32 : Breit-Pauli transition probabilities for SII (Tayal+, 2010)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/541/A61https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/541/A61http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/541/A61https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/541/A61https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/541/A61http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/541/A61GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/541/A61/table1Excitation energies (in Ryd) of the 68 target levels included in the present transition rates and scattering calculationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIndex[1,68] Indexmeta.idintStateStatephys2JJ value for the level of the statephys.atmol.qnintEPresent excitation energyRyphys.energy;phys.atmol.leveldoubleEBLExcitation energy from CI calculation of Bhatia & Landi, (2003, At. Data and Nucl. Data Tables, 85, 317)Ryphys.energy;phys.atmol.leveldoubleEexp? Excitation energy from experiment (1)Ryphys.energy;phys.atmol.leveldoublenullabletau? Lifetime in dipole approximation from the present calculationnstime.lifetimedoublenullableJ/A+A/541/A61/table2Comparison of oscillator strengths and transition probabilities for some dipole radiative E1 transitionsfFinal level of a transitionphys.atmol.qnrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintiInitial level of a transitionphys.atmol.qngi(2J+1) value for initial level of a transitionphys.atmol.qnintgf(2J+1) value for final level of a transitionphys.atmol.qnintfifPresent length value of oscillator strengthphys.atmol.oscStrengthdoubleAifPresent length value of transition probabilitys**-1phys.atmol.transProbdoublefifBLLength value of oscillator strength from calculations of Bhatia & Landi, (2003, At. Data and Nucl. Data Tables, 85, 317)phys.atmol.oscStrengthdoubleAifBLLength value of transition probability from calculations of Bhatia & Landi, (2003, At. Data and Nucl. Data Tables, 85, 317)s**-1phys.atmol.transProbdoubleAifTFLength value of transition probability from calculations of Tachiev & Froese Fischer (2002, Cat. J/A+A/385/716)s**-1phys.atmol.transProbdoubleJ/A+A/541/A61/table3Oscillator strengths and transition probabilities for dipole radiative E1 transitionsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintiInitial level of a transitionphys.atmol.qnfFinal level of a transitionphys.atmol.qngi(2J+1) value for the lower level of the transitionphys.atmol.qnintgf(2J+1) 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.oscStrengthdoubleAifPresent length value of transition probabilitys**-1phys.atmol.transProbdoubleJ/A+A/541/A61/table4Effective collision strengths for transitions in SiVIIIrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordinti[1,67] i lower level index of the transitionmeta.id;phys.atmol.transProb;phys.atmol.transitionintj[2,68] j upper level index of the transitionmeta.idintECS1Effective collision strength at Te=10000Kphys.atmol.collStrengthdoubleECS2.5Effective collision strength at Te=25000Kphys.atmol.collStrengthdoubleECS5Effective collision strength at Te=50000Kphys.atmol.collStrengthdoubleECS7.5Effective collision strength at Te=75000Kphys.atmol.collStrengthdoubleECS10Effective collision strength at Te=100000Kphys.atmol.collStrengthdoubleECS20Effective collision strength at Te=200000Kphys.atmol.collStrengthdoubleECS40Effective collision strength at Te=400000Kphys.atmol.collStrengthdoubleECS60Effective collision strength at Te=600000Kphys.atmol.collStrengthdoubleECS80Effective collision strength at Te=800000Kphys.atmol.collStrengthdoubleECS100Effective collision strength at Te=1000000Kphys.atmol.collStrengthdoubleECS120Effective collision strength at Te=1200000Kphys.atmol.collStrengthdoubleECS200Effective collision strength at Te=2000000Kphys.atmol.collStrengthdoubleECS300Effective collision strength at Te=3000000Kphys.atmol.collStrengthdoubleECS400Effective collision strength at Te=4000000Kphys.atmol.collStrengthdouble