J/A+AS/123/575ivo://CDS.VizieR/J/A+AS/123/575CDSZhang H.L.Pradhan A.K.1998-09-10T15:22:39Z1998-09-10T15:22:28ZCDS support team

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

cds-question@unistra.fratomic-physicsNew collision strengths have been calculated for 990 transitions among 45 fine structure n=2 and n=3 levels of Fe XXII. The relativistic Breit-Pauli formulation of the R-matrix method was employed in the close coupling approximation, with radiation damping of autoionizing resonances included for the first time in the calculations of excitation rate coefficients. It is found that, at low temperatures, the relativistic effects considerably enhance rate coefficients for the intercombination transitions, and the radiation damping effect reduces those for a few transitions. It is also found that resonances due to coupling with the n=3 levels significantly enhance rate coefficients for the transitions to low-lying levels at intermediate and high temperatures, and for the transitions to the n=2 high-lying levels at all temperatures. It is expected that the new data, tabulated at a wide range of temperatures, would lead to a revision of the spectral diagnostics of Fe XXII in laboratory and astrophysical sources, in particular the X-ray spectra observed from solar flares and tokamaks.1997A&AS..123..575Zhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+AS/123/575CatalogResearchIsServedByTAP 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/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/437/345 : IRON Project LIX Fe IV transition probabilitiesJ/A+A/448/779 : IRON Project LXI Fe IV radiative transitionsJ/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+AS/123/575https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+AS/123/575http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+AS/123/575https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+AS/123/575https://vizier.iucaa.in/viz-bin/votable?-source=J/A+AS/123/575http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+AS/123/575GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+AS/123/575/levels3Levels for table3recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIndexLevel indexstat.fit.paramintConfElectronic configurationphys.atmol.configurationcharTermElectronic termphys.atmol.qncharJTotal angular momentumphys.atmol.qnfloatETheoretical energyRyphys.energy;phys.atmol.leveldoubleJ/A+AS/123/575/levels4Levels for table4recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIndexLevel indexstat.fit.paramintConfElectronic configurationphys.atmol.configurationcharTermElectronic termphys.atmol.qncharJTotal angular momentumphys.atmol.qnfloatETheoretical energyRyphys.energy;phys.atmol.leveldoubleJ/A+AS/123/575/levels5Levels for table5recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIndexLevel indexstat.fit.paramintConfElectronic configurationphys.atmol.configurationcharTermElectronic termphys.atmol.qncharJTotal angular momentumphys.atmol.qnfloatETheoretical energyRyphys.energy;phys.atmol.leveldouble