J/ApJS/170/251ivo://CDS.VizieR/J/ApJS/170/251doi:10.26093/cds/vizier.21700251CDSDrake G.W.F.Morton D.C.2017-07-10T06:22:09Z2009-06-10T12:36:36ZCDS support team

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

cds-question@unistra.fratomic-physicsstellar-atmospheresThis paper combines the precise determination of the energy levels of ^4^HeI from calculations and experiments with theoretical transition probabilities to present multiplet tables and finding lists for the fine structure of the helium atom. The tabulated transition rates and oscillator strengths include corrections for singlet-triplet mixing and spin-orbit coupling, but not the higher order relativistic terms nor the finite nuclear mass, although the latter are tabulated for future use. The results are consistent with laboratory lifetimes and oscillator strengths, but very few measurements are accurate enough to be stringent tests. An Appendix discusses the corrections for finite nuclear mass.2007ApJS..170..251Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/170/251CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/170/251https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/170/251http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/170/251https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/170/251https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/170/251http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/170/251GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/ApJS/170/251/transsinglet-singlet and triple-triplet transitions of ^4^HeIrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNSequential multiplet numberphys.atmol.levelintprimaryTransLevel designations n ^2S+1^L (Lower-Upper)meta.id;phys.atmol.transitionchargMlLower level total statistical weightphys.atmol.sWeightintgMuUpper level total statistical weightsphys.atmol.sWeightintWaveMean multiplet wavelength/wavenumberem.wl;stat.meandoubleInfMean multiplet nonrelativistic wavelength/wavenumber (1)em.wl;phys.atmol.transitiondoubleRatRatio of mean transition energies for true and infinite nuclear massstat.fit.omcdoubleetaCoefficient of y in (1+{eta}y) (3)stat.fit.paramfloattauMean lifetime of term's upper levels (4)nstime.lifetime;phys.atmol.leveldoublefMluMultiplet absorption oscillator strength for infinite nuclear massphys.atmol.oscStrengthdoublefMulMultiplet emission oscillator strength for infinite nuclear mass (5)phys.atmol.oscStrengthdoubleJ/ApJS/170/251/trans_fineFine structure ofrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNSequential multiplet numberphys.atmol.levelintprimaryTransLevel designations n ^2S+1^L (Lower-Upper)meta.id;phys.atmol.transitioncharJl? Lower level J value (6)phys.atmol.qnintnullableJu? Upper level J value (6)phys.atmol.qnintnullableVWaveVacuum wavelength in {AA}0.1nmem.wl;phys.atmol.transitiondoublesigmaVacuum wavenumber (1/{lambda} = Eup - Elow)cm**-1em.freqdoublenullableAulSpontaneous transition rate (4)s**-1phys.atmol.transProbdoubleSAulSum of all A_ul_ to lower levels (5)s**-1phys.atmol.transProbdoublefluAbsorption oscillator strength or f-value (4)phys.atmol.oscStrengthdoubleRat? Ratio of flux to one from pure LS-coupled states with no singlet-triplet mixingstat.fit.omcfloatnullableAWave? Air wavelength (1)0.1nmem.wl;phys.atmol.transitiondoublenullableElowLower level energy from this papercm**-1phys.energy;phys.atmol.leveldoubleEupUpper level energy from this papercm**-1phys.energy;phys.atmol.leveldoubleJ/ApJS/170/251/table8Finding List for ^4^He Wavelengths<10000{AA}recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWaveMean multiplet wavelength in vacuum in Angstroms0.1nmem.wl;stat.meandoubleNSequential multiplet numberphys.atmol.levelintTransLevel designations n ^2S+1^L (Lower-Upper)meta.id;phys.atmol.transitionchargMlLower level total statistical weightphys.atmol.sWeightintgMuUpper level total statistical weightsphys.atmol.sWeightintAMulMultiplet spontaneous transition rate (1)s**-1phys.energy;phys.atmol.transitiondoublefMlMultiplet absorption oscillator strength corresponding to AMulphys.atmol.oscStrengthdoublelog(gf)Log of the weighted multiplet absorption or emission oscillator strengthphys.absorptionfloatJ/ApJS/170/251/table9Finding List for ^4^He Wavenumbers<10000cm^-1^recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWaveMean wavenumbercm**-1em.freqdoubleNSequential multiplet numberphys.atmol.levelintTransLevel designations n ^2S+1^L (Lower-Upper)meta.id;phys.atmol.transitionchargMlLower level total statistical weightphys.atmol.sWeightintgMuUpper level total statistical weightsphys.atmol.sWeightintAMulMultiplet spontaneous transition rate (1)s**-1phys.energy;phys.atmol.transitiondoublefMlMultiplet absorption oscillator strength corresponding to AMulphys.atmol.oscStrengthdoublelog(gf)Log of the weighted multiplet absorption or emission oscillator strengthphys.absorptionfloat