J/A+A/487/383ivo://CDS.VizieR/J/A+A/487/383doi:10.26093/cds/vizier.34870383CDSAggarwal K.M.Hamada K.Igarashi A.Jonauskas V.Keenan P.F.,Nakazaki S.2008-11-15T21:42:21Z2008-11-15T22:38:13ZCDS support team

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

cds-question@unistra.fratomic-physicsIn this paper we report on calculations for energy levels, radiative rates, collision strengths, and effective collision strengths for transitions among the lowest 25 levels of the n<=5 configurations of H-like Ar XVIII. The general-purpose relativistic atomic structure package (GRASP) and Dirac atomic R-matrix code (DARC) are adopted for the calculations. Radiative rates, oscillator strengths, and line strengths are reported for all electric dipole (E1), magnetic dipole (M1), electric quadrupole (E2), and magnetic quadrupole (M2) transitions among the 25 levels. Furthermore, collision strengths and effective collision strengths are listed for all 300 transitions among the above 25 levels over a wide energy (temperature) range up to 800Ryd (10^7.4^K).2008A&A...487..383Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/487/383CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/ApJS/123/311 : O III excitation rate coefficients (Aggarwal+, 1999)J/ApJS/121/265 : Fe XV oscillator Strengths and Radiative Rates (Deb+, 1999)J/A+A/407/769 : Ca XV excitation rates for transitions (Aggarwal+, 2003)J/A+A/399/799 : Fe XI effective collision strengths (Aggarwal+, 2003)J/A+A/410/349 : Fe XV effective collision strengths (Aggarwal+, 2003)J/A+A/416/383 : Fe XVIII transition probabilities (Jonauskas+, 2004)J/A+A/418/371 : Fe XIII electron impact excitation (Aggarwal+, 2004)J/A+A/420/783 : Fe XVII electron impact excitation (Aggarwal+, 2004)J/A+A/427/763 : Fe X E1, E2,M1 and M2 transitions (Aggarwal+, 2004)J/A+A/439/1215 : Fe X effective collision strengths (Aggarwal+, 2005)J/A+A/429/1117 : Fe XIII effective collision strengths (Aggarwal+, 2005)J/A+A/432/1151 : Al XIII electron impact excitation (Aggarwal+, 2005)J/A+A/436/1141 : Ar XIII, Ar XIV + Ar XV radiative rates (Aggarwal+, 2005)J/A+A/441/831 : Ar XVII electron impact excitation (Aggarwal+, 2005)J/A+A/450/1249 : Fe XVI radiative and excitation rates (Aggarwal+, 2006)J/A+A/460/331 : Fe IX radiative and excitation rates (Aggarwal+, 2006)J/A+A/463/399 : Fe XVI radiative rates (Aggarwal+, 2007)J/A+A/484/879 : Fe XXVII radiative and excitation rates (Aggarwal+, 2008)J/A+A/486/1053 : O IV radiative and excitation rates (Aggarwal+, 2008)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/487/383https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/487/383http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/487/383https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/487/383https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/487/383http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/487/383GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/487/383/table4Effective collision strengths for transitions in Ar XVIIIECS6.80Effective collision strength at logTe=6.80Kphys.atmol.collStrengthdoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordinti[1,24] i lower level index of the transitionmeta.idintj[2,25] j upper level index of the transitionmeta.idintECS5.60Effective collision strength at logTe=5.60Kphys.atmol.collStrengthdoubleECS5.80Effective collision strength at logTe=5.80Kphys.atmol.collStrengthdoubleECS6.00Effective collision strength at logTe=6.00Kphys.atmol.collStrengthdoubleECS6.20Effective collision strength at logTe=6.20Kphys.atmol.collStrengthdoubleECS6.40Effective collision strength at logTe=6.40Kphys.atmol.collStrengthdoubleECS6.60Effective collision strength at logTe=6.60Kphys.atmol.collStrengthdoubleECS7.00Effective collision strength at logTe=7.00Kphys.atmol.collStrengthdoubleECS7.20Effective collision strength at logTe=7.20Kphys.atmol.collStrengthdoubleECS7.40Effective collision strength at logTe=7.40Kphys.atmol.collStrengthdoubleJ/A+A/487/383/table1Energy levels (in Ryd) of Ar XVIIIrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIndex[1,25] Indexmeta.idintConfConfigurationphys.atmol.configuration;instr.setupLevelLevelmeta.id;phys.atmol.levelExptTheoretical threshold energy (1)Ryinstr.sensitivitydoubleGRASP1? Coulomb energyRyphys.energydoublenullableGRASP2QED corrected energyRyphys.energydoubleFACPresent energy calculations from the Flexible Atomic Code (FAC) codephys.energy;phys.atmol.leveldoubleJ/A+A/487/383/table2Transition wavelengths, radiative rates, oscillator strengths and line strengths for electric dipole (E1), and A_ji_ for E2, M1 and M2 transitions in Ar XVIIIi[1,24] Lower levelmeta.idintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintj[2,25] Upper levelmeta.idintlambdaijTransition wavelength0.1nmem.wl;phys.atmol.transitiondoubleAjiE1Electric dipole (E1) radiative rates**-1phys.atmol.transProbdoublefijE1Electric dipole (E1) oscillator strengthphys.atmol.oscStrengthdoubleSE1Electric dipole (E1) line strength (in atomic unit)spect.line.strengthdoubleAjiE2Electric quadrupole (E2) radiative rates**-1phys.atmol.transProbdoubleAijM1Magnetic dipole (M1) radiative rates**-1phys.atmol.transProbdoubleAijM2Magnetic quadrupole (M2) radiative rates**-1phys.atmol.transProbdoubleJ/A+A/487/383/table3Collision strengths for transitions in Ar XVIIIj[2,25] j upper level index of the transitionmeta.idintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordinti[1,24] i lower level index of the transitionmeta.idintCS350Collision strength at 350Ryphys.atmol.collStrengthdoubleCS400Collision strength at 400Ryphys.atmol.collStrengthdoubleCS500Collision strength at 500Ryphys.atmol.collStrengthdoubleCS600Collision strength at 600Ryphys.atmol.collStrengthdoubleCS700Collision strength at 700Ryphys.atmol.collStrengthdoubleCS800Collision strength at 800Ryphys.atmol.collStrengthdoubleCSFACCollision strength at FAC energy in table1phys.atmol.collStrengthdouble