J/A+A/448/779ivo://CDS.VizieR/J/A+A/448/779doi:10.26093/cds/vizier.34480779CDSNahar S.N.2006-06-04T06:42:35Z2006-06-04T06:39:48ZCDS support team

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

cds-question@unistra.fratomic-physicsRadiative decay rates (A) and line strengths (S) are presented for a large number of electric dipole allowed (E1) and forbidden electric quadrupole (E2), octupole (E3) and magnetic dipole (M1) transitions in Fe IV. The ion is amongst the most complex iron ions and exhibits effects of strong electron correlation. It has closely spaced fine structure levels from seven configurations: 3s^2^3p^6^3d^5^, 3s^2^3p^6^3d^4^4s, 3s^2^3p^6^3d^4^4p, 3s^2^3p^6^3d^4^4d, 3s^2^3p^6^3d^3^4s4p, 3s^2^3p^6^3d^3^4s4d, 3s^2^3p^5^3d^6^ before an energy gap could be noted. Atomic parameters are presented for multipole radiative transitions among the 1275 fine structure levels dominated by these seven configurations. A total of approximately 173000 transitions of type E1, E2, E3 and M1 are presented.2006A&A...448..779Nhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/448/779CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+AS/103/273 : IRON Project II IR collision strengths of C-like ionsJ/A+A/283/319 : IRON Project III B-like ionsJ/A+AS/108/1 : IRON Project V Collision strengths of O-like ionsJ/A+A/293/953 : IRON Project VI Fe II collision strengthsJ/A+A/293/967 : IRON Project VII Fe II radiative transitionsJ/A+AS/109/193 : IRON Project VIII Electron excitation of Ti-like ionsJ/A+AS/119/509 : IRON Project XVII Radiative transition in Fe IIIJ/A+AS/119/523 : IRON Project XVIII Electron impact for Fe IIIJ/A+AS/120/361 : IRON Project XIX Fe II radiative transitionsJ/A+AS/123/159 : IRON Project XXII C and O radiative ratesJ/A+AS/123/575 : IRON Project XXIII Fe XXII excitation rate coefficientsJ/A+AS/126/373 : IRON Project XXVII Fe IV collision strengthsJ/A+AS/131/499 : IRON Project XXIX Boron isoelectronic sequenceJ/A+AS/131/153 : IRON Project XXXI Fe XII electron excitationJ/A+AS/135/347 : IRON Project XXXV Fe XXIV & Fe XXV oscillator strengthsJ/A+AS/136/395 : IRON Project XXXVII Fe VI collision strengthsJ/A+AS/137/165 : IRON Project XXXVIII Fe XV fine-structure transitionsJ/A+AS/143/483 : IRON Project XLII Fe XXI electron impact excitationJ/A+AS/144/141 : IRON Project XLIII Fe V transition probabilitiesJ/A+AS/147/111 : IRON Project XLIV Fe VI trans. prob. & line ratioJ/A+AS/147/253 : IRON Project XLV Ar XIII, Fe XXI trans. probabilitiesJ/A+A/365/268 : IRON Project XLVII Ni III electron impact excitationJ/A+A/372/1078 : IRON Project XLIX Fe XX electron impact excitationJ/A+A/372/1083 : IRON Project L Fe XIX electron impact excitationJ/A+A/394/753 : IRON Project LI Fe IX electron impact excitationJ/A+A/408/789 : IRON Project LIII Fe XVII transition probabilitiesJ/A+A/413/779 : IRON Project LIV Fe XX transition probabilitiesJ/A+A/420/763 : IRON Project LV Ni II electron impact excitationJ/A+A/430/331 : IRON Project LVI NEVER ARRIVED !!!!!!!J/A+A/437/345 : IRON Project LIX Fe IV transition probabilitiesJ/A+A/457/721 : IRON Project LXII Fe XVIII allowed and forbidden trans.J/A+A/466/763 : IRON Project LXIII Fe^19+^ electron impact excitationhttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/448/779https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/448/779http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/448/779https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/448/779https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/448/779http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/448/779GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/448/779/table1Fine Structure energies employed in the transition probabilities for Fe IVSLpSLp termphys.atmol.configurationcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintie[1,1275] Fine structure level numbermeta.idintConfConfiguration number code (G1)phys.atmol.configurationint2J2J valuephys.atmol.qnintkk valuecmphys.atmol.transitiondoubleEcalCalculated energyRyphys.energy;meta.modelleddoublecfgConfigurationphys.atmol.configurationcharA1[1/3]?meta.codeintnullablesymmEncoded symmetrymeta.codeintEobsObserved EnergyRyphys.energydoubledfPercent difference between calculated and observed energies%stat.fit.omc;phys.energyfloatJ/A+A/448/779/table2a*Dipole allowed E1d fine structure transitionsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNi[1,608] Initial level numbermeta.idintNj[1,645] Final level numbermeta.idintgiInitial statistical weight factor of the levelphys.atmol.oscStrengthintgjFinal statistical weight factor of the levelphys.atmol.oscStrengthintEijTransition energy0.1nmphys.energy;phys.atmol.transitiondoubleEiInitial energyRyphys.energy;phys.atmol.levelfloatEjFinal energyRyphys.energy;phys.atmol.levelfloatfijOscillator strengthphys.atmol.oscStrengthdoubleSLine strengthspect.line.intensitydoubleajiEinstein's A-coefficients (1)s**-1phys.atmol.transProbdoubleJ/A+A/448/779/table2b*Fine structure E1i intercombination transitionsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNi[1,608] Initial level numbermeta.idintNj[1,645] Final level numbermeta.idintgiInitial statistical weight factor of the levelphys.atmol.oscStrengthintgjFinal statistical weight factor of the levelphys.atmol.oscStrengthintEijTransition energy0.1nmphys.energy;phys.atmol.transitiondoubleEiInitial energyRyphys.energy;phys.atmol.levelfloatEjFinal energyRyphys.energy;phys.atmol.levelfloatfijOscillator strengthphys.atmol.oscStrengthdoubleSLine strengthspect.line.intensitydoubleajiEinstein's A-coefficients (1)s**-1phys.atmol.transProbdoubleJ/A+A/448/779/table2c*Forbidden octu E3 and quadrupole M2 transitionsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNi[1,809] Initial level numbermeta.idintNj[1,812] Final level numbermeta.idintgiInitial statistical weight factor of the levelphys.atmol.oscStrengthintgjFinal statistical weight factor of the levelphys.atmol.oscStrengthintwlWavelength in vacuum0.1nmphys.energy;phys.atmol.transitiondoubleSEE3 (table2c) or E2 (table2d) line strength (1)spect.line.intensitydoubleAEForbidden E3 (table2c) or E2 (table2d) transition probabilitys**-1phys.atmol.transProbdoubleSMM2 (table2c) or M1 (table2d) line strength (1)spect.line.intensitydoubleAMForbidden M2 (table2c) or M1 (table2d) transition probabilitys**-1phys.atmol.transProbdoubleJ/A+A/448/779/table2d*Forbidden quadrupole E2 and dipole M1 transitionsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNi[1,809] Initial level numbermeta.idintNj[1,812] Final level numbermeta.idintgiInitial statistical weight factor of the levelphys.atmol.oscStrengthintgjFinal statistical weight factor of the levelphys.atmol.oscStrengthintwlWavelength in vacuum0.1nmphys.energy;phys.atmol.transitiondoubleSEE3 (table2c) or E2 (table2d) line strength (1)spect.line.intensitydoubleAEForbidden E3 (table2c) or E2 (table2d) transition probabilitys**-1phys.atmol.transProbdoubleSMM2 (table2c) or M1 (table2d) line strength (1)spect.line.intensitydoubleAMForbidden M2 (table2c) or M1 (table2d) transition probabilitys**-1phys.atmol.transProbdouble