J/ApJS/123/295ivo://CDS.VizieR/J/ApJS/123/295doi:10.26093/cds/vizier.21230295CDSGupta G.P.Tayal S.S.2000-02-24T07:33:21Z2000-02-24T08:32:16ZCDS support team

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

cds-question@unistra.fratomic-physicsCollision strengths for electron impact excitation of fine-structure levels in sulfur-like Fe XI are calculated in a semirelativistic R-matrix approach. The 38 fine-structure levels arising from the 20 LS states 3s^2^3p^4^ ^3^P, ^1^D, ^1^S; 3s3p^5^ ^3^P^0^, ^1^P^0^; 3s^2^3p^3^(^4^S^0^)3d ^3^D^0^, 3s^2^3p^3^(^2^P^0^)3d ^1,3^P^0^, ^1,3^D^0^, ^1,3^F^0^, 3s^2^3p^3^(^2^D^0^)3d ^1,3^S^0^, ^1,3^P^0^, ^1,3^D^0^, ^1,3^F^0^ are included in our calculation. The target levels are represented by configuration interaction wave functions. The relativistic effects are considered in the Breit-Pauli approximation by including one-body mass correction, Darwin term, and spin-orbit terms in the scattering equations. Collision strengths for transitions from the 3s^2^3p^4^ ^3^P_2,1,0_ levels to the fine-structure levels of the 3s^2^3p^3^3d configuration are compared with the distorted-wave results of Bhatia & Doschek (1996) at 8.0, 16.0, 24.0 ryd. There are some significant discrepancies between the two calculations, mostly caused by the difference in target wave functions. The collision strengths are integrated over a Maxwellian distribution of electron energies to obtain effective collision strengths over the temperature range from 5x10^5^ to 5x10^6^ K.1999ApJS..123..295Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/123/295CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/293/953 : IRON project VI. FeII collision strengths (Zhang+, 1995)J/A+AS/119/523 : IRON project XVIII. Fe III data (Zhang 1996)J/A+AS/126/373 : IRON Project XXVII. Fe IV collision strengths (Zhang+ 1997)J/A+AS/136/395 : IRON Project XXXVII. Fe VI collision strengths (Chen+ 1999)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/123/295https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/123/295http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/123/295https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/123/295https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/123/295http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/123/295GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/ApJS/123/295/table1Comparison of calculated and experimental energy levels of Fe XIrecnoRecord number assigned by the VizieR team. Should Not be used for identification.intIndexIndex number of the levelintConfigElectron configurationJTotal angular momentum of the levelintELevCEnergy levels of the present calculation in hartrees2RyfloatELevE? Energy levels from experimental work in hartrees2RyfloatnullableJ/ApJS/123/295/table2Collison strengths for electron excitation of fine-structure levels in Fe XIrecnoRecord number assigned by the VizieR team. Should Not be used for identification.intLIndLower level index (see Index in table1.dat)intUIndUpper level index (see Index in table1.dat)intCS8PCollision Strength (at 8 Ryd) from this workdoubleCS8BDCollision Strength (at 8 Ryd) from Bhatia & Doschek 1996doubleCS16PCollision Strength (at 16 Ryd) from this workdoubleCS16BDCollision Strength (at 16 Ryd) from Bhatia & Doschek 1996doubleCS24PCollision Strength (at 24 Ryd) from this workdoubleCS24BDCollision Strength (at 24 Ryd) from Bhatia & Doschek 1996doubleJ/ApJS/123/295/table3Effective Collision Strengths for Fe XIrecnoRecord number assigned by the VizieR team. Should Not be used for identification.intLIndLower level index (see Index in table1.dat)intUIndUpper level index (see Index in table1.dat)intCS5Effective Collision Strength at 5x10^5^ KdoubleCS8Effective Collision Strength at 5x10^5^ KdoubleCS10Effective Collision Strength at 10x10^5^ KdoubleCS15Effective Collision Strength at 15x10^5^ KdoubleCS20Effective Collision Strength at 20x10^5^ KdoubleCS30Effective Collision Strength at 30x10^5^ KdoubleCS40Effective Collision Strength at 40x10^5^ KdoubleCS50Effective Collision Strength at 50x10^5^ Kdouble