The XSTAR Atomic Database

We report on the XSTAR atomic database that contains a large quantity of atomic rates for use in spectral modeling of astrophysical plasmas. The database includes atomic energy levels, line wavelengths, radiative transition probabilities, electron impact excitation rates, photoionization cross section, recombination rate coefficients, electron impact ionization rates, and fluorescence and Auger yields. The species considered are all the ions of H, He, C, N, O, Ne, Mg, Si, S, Ar, Ca, Fe, and Ni. The database collects recent data from many sources including CHIANTI, TOPbase, ADAS, NIST, and the IRON Project. Two particular features of the database are the incorporation of photoionization cross sections from the Opacity Project for all levels of every ion, and state-specific recombination rates. State-specific collisional ionization and three-body recombination are also included. The collection of data is used to build excitation-ionization models of each ion for calculation of their spectra for electron densities of up to 1018 cm-3 and temperatures between 100 and 109 K. In addition, every ion model is designed to converge to LTE under appropriate conditions. These models and data are implemented in the photoionization modeling code XSTAR v.2.

[1]  Matthew P. Scott,et al.  Atomic data for opacity calculations. XXI. The neon sequence , 1994 .

[2]  B. C. Fawcett,et al.  A slater parameter optimization method applied to the computation of collision strengths for Fe XIII , 1989 .

[3]  W. Eissner,et al.  Techniques for the calculation of atomic structures and radiative data including relativistic corrections , 1974 .

[4]  Pj Storey,et al.  FORBIDDEN EMISSION-LINES OF FE VII , 1982 .

[5]  Brendan M. McLaughlin,et al.  Analytical FITS for electron collisionally excited effective collision strengths of O II , 1994 .

[6]  K A Berrington,et al.  Atomic data for opacity calculations. XIV. The beryllium sequence , 1990 .

[7]  George A. Doschek,et al.  Atomic data for S IV and solar observations of the 3x/2/3p /2/P-3s3p/2/ /4/P multiplet , 1980 .

[8]  Ronald J. W. Henry,et al.  Excitation of lithiumlike ions by electron impact , 1977 .

[9]  Claudio Mendoza,et al.  Atomic data for opacity calculations. XIX. The magnesium isoelectronic sequence , 1993 .

[10]  R. D. Cowan,et al.  The Theory of Atomic Structure and Spectra , 1981 .

[11]  J. Callaway,et al.  Effective Collision Strengths for Hydrogen and Hydrogen-Like Ions , 1994 .

[12]  Guo Xin Chen,et al.  Atomic data from the Iron Project-XXXVII. Electron impact excitation collision strengths and rate coefficients for Fe VI , 1997 .

[13]  A. E. Kingston,et al.  Excitation Rate Coefficients for Transitions among the N = 1, 2, and 3 Levels of He + , 1992 .

[14]  Philip Dufton,et al.  Effective collision strengths for Si III , 1989 .

[15]  K A Berrington,et al.  Atomic data from the IRON Project - XXIV. Electron excitation of Li-like Fe xxiv between the $n$ = 2 and $n'$ = 2, 3, 4 fine-structure levels , 1997 .

[16]  M. Hayes,et al.  The S III intercombination multiplet: radiative and electron excitation data , 1986 .

[17]  Bin Liu,et al.  Energy levels, lifetimes, wavelengths, and transition probabilities of Fe XIV , 1986 .

[18]  Hong Lin Zhang,et al.  Semiempirical formulae for electron impact excitation and ionization of hydrogenic ions , 1988 .

[19]  George B. Field,et al.  Charge Transfer and Ionization Equilibrium in the Interstellar Medium , 1971 .

[20]  Honglin Zhang,et al.  Collision Rates for Excitation of Helium-like Ions with Inclusion of Resonance Effects , 1987 .

[21]  K A Berrington,et al.  Atomic data from the IRON Project - XLI. Electron excitation rates among the 3d$^2$ fine-structure levels of Ca-like Fe VII , 2000 .

[22]  Pj Storey,et al.  C II two-electron transitions , 1981 .

[23]  R. Gould,et al.  Atomic processes in a low-density hydrogen- helium plasma , 1970 .

[24]  M. Seaton,et al.  Atomic data for opacity calculations. I. General description , 1987 .

[25]  Badnell,et al.  Inclusion of radiation damping in the close-coupling equations for electron-atom scattering. , 1995, Physical review. A, Atomic, molecular, and optical physics.

[26]  R. H. Garstang,et al.  Transition Probabilities for Forbidden Lines of Ne IV , 1960 .

[27]  H. L. Zhang,et al.  Relativistic distorted-wave collision strengths and oscillator strengths for the 45 ? = 0 transitions with = 2 in the 85 Be-like ions with 8 ? ? 92 , 1992 .

[28]  Charlotte Froese Fischer,et al.  The Hartree-Fock method for atoms: A numerical approach , 1977 .

[29]  Manuel A. Bautista,et al.  Theoretical Calculations of Atomic Data for Spectroscopy , 2000, astro-ph/0006286.

[30]  J. Simons,et al.  The Hartree-Fock Method for Atoms , 1979 .

[31]  Yew Kam Ho,et al.  Oscillator strengths and collision strengths for S III , 1980 .

[32]  K. M. Aggarwal.  Line intensity ratios for transitions in O III , 1985 .

[33]  Alan Hibbert,et al.  Transition probabilities for some spectral lines of singly ionised nitrogen , 1995 .

[34]  Anil K. Pradhan,et al.  The Analysis of Emission Lines: Atomic Data for the Analysis of Emission Lines , 1995 .

[35]  Anil K. Pradhan,et al.  Atomic data for opacity calculations. XVIII. Photoionization and oscillator strengths of Si-like ions Si0, S2+, Ar4+, Ca6+ , 1993 .

[36]  B. C. Fawcett,et al.  Collision strengths and oscillator strengths for Fe IX , 1991 .

[37]  Man Mohan,et al.  Electron-impact excitation of MG IV using the R-matrix method , 1988 .

[38]  Oliver Hemmers,et al.  The K-shell Auger decay of atomic oxygen , 1997 .

[39]  A. E. Kingston,et al.  Electron impact excitation of Fe XXVI - Collision strengths and rate coefficients , 1993 .

[40]  Enrico Landi,et al.  CHIANTI : AN ATOMIC DATABASE FOR EMISSION LINES III. CONTINUUM RADIATION AND EXTENSION OF THE ION DATABASE , 1999 .

[41]  Manuel A. Bautista.  Atomic data from the Iron Project - XXXIX. Photoionization cross sections and oscillator strengths for Ni II , 1999 .

[42]  W. D. Robb,et al.  Atomic nitrogen as a probe of physical conditions in the interstellar medium , 1976 .

[43]  Manuel A. Bautista,et al.  Atomic data from the IRON Project XX. Photoionization cross sections and oscillator strengths for Fe I , 1997 .

[44]  W. Dankwort,et al.  Breit-Pauli approximation for highly ionized boron-like ions, up to Fe XXII , 1978 .

[45]  H. E. Mason.  An assessment of theoretical electron excitation data for Fe IX-Fe XIV , 1994 .

[46]  Jacques Dubau,et al.  Theoretical analysis of the Fe XVIII X-ray spectrum and application to solar coronal observations , 1992 .

[47]  Anil K. Pradhan,et al.  Excitation rate coefficients and line ratios for the optical and ultraviolet transitions in S II , 1993 .

[48]  K A Berrington,et al.  Electron impact excitation rates for transitions involving the n = 2 and n = 3 levels of beryllium-like N IV , 1994 .

[49]  K. Aggarwal,et al.  Electron impact excitation of Ne X: collision strengths and rate coefficients , 1991 .

[50]  P G Burke,et al.  Electron impact excitation of n=3 states of C III: an application of a new R-matrix package , 1989 .

[51]  Wolfgang L. Wiese,et al.  ATOMIC TRANSITION PROBABILITIES. VOLUME 1. HYDROGEN THROUGH NEON , 1966 .

[52]  Charlotte E. Moore,et al.  Selected tables of atomic spectra , 1980 .

[53]  A. P. Hickman,et al.  Complex potential model for dielectronic recombination , 1984 .

[54]  D. R. Bates,et al.  Quantal calculation of the lifetime of N+(5S) and the λ2145Å auroral mystery feature , 1981 .

[55]  R. H. Garstang.  Energy Levels and Transition Probabilities of Fe IV , 1958 .

[56]  Manfred O. Krause,et al.  Photoexcited K Auger spectra of atomic and molecular oxygen , 1994 .

[57]  Manuel A. Bautista,et al.  CORRIGENDUM: Electron-impact inner-shell excitation of Fe XVIElectron-impact inner-shell excitation of Fe XVI , 2000 .

[58]  M Le Dourneuf,et al.  Electron impact excitation of fine-structure levels of atomic oxygen , 1976 .

[59]  Candace Lee Heald,et al.  Building Bridges between Teachers and Resources. , 1995 .

[60]  P. J. Storey,et al.  Dielectronic recombination at low temperatures. III - Recombination coefficients for Mg, Al, SI , 1986 .

[61]  Takako Kato,et al.  Recommended data for excitation rate coefficients of helium atoms and helium-like ions by electron impact , 1989 .

[62]  Claudio Mendoza,et al.  Atomic data from the IRON Project , 1999 .

[63]  K. Aggarwal,et al.  Collision strengths and excitation rate coefficients for transitions in Fe XXI , 1991 .

[64]  C. Ramsbottom,et al.  Effective collision strengths for electron-impact excitation of singly ionized sulfur , 1996 .

[65]  R. C. Weast.  CRC Handbook of Chemistry and Physics , 1973 .

[66]  Claudio Mendoza,et al.  TOPbases at the CDS , 1993 .

[67]  NASA Goddard Space Flight Center,et al.  Resonance-averaged photoionization cross sections for astrophysical models , 1998 .

[68]  Sultana N. Nahar.  PHOTOIONIZATION CROSS SECTIONS AND OSCILLATOR STRENGTHS FOR FE III , 1996 .

[69]  G. Doschek,et al.  Atomic Data and Spectral Line Intensities for C-like Ne V , 1993 .

[70]  K. Aggarwal,et al.  Electron impact excitation of C VI: collision strengths and rate coefficients , 1991 .

[71]  Charlotte Froese Fischer,et al.  A general multi-configuration Hartree-Fock program , 1984 .

[72]  Stephen J. Goett,et al.  Collision strengths and line strengths for fine-structure transitions between the 2la2lb configurations and the 2l′a3l′b configurations in Be-like ions☆ , 1984 .

[73]  George M. Weaver,et al.  Collision strengths and line strengths for all transitions among the levels of the 1s22s22p, 1s22s2p2, and 1s22p3 configurations of boron-like ions , 1986 .

[74]  Anil K. Pradhan,et al.  Atomic data for opacity calculations: XX. Photoionization cross sections and oscillator strengths for Fe II , 1994 .

[75]  Ronald J. W. Henry,et al.  Electron excitation of fine-structure transitions within the ground 3s2 3p3 configuration in Fe XII , 1987 .

[76]  S. Giridhar,et al.  A Critical Compilation of Oscillator Strengths for fe II Lines , 1995 .

[77]  山内 恭彦,et al.  Atomic Transition Probabilities, Hydrogen through Neon, U.S. Department of Commerce, National Bureau of Standards, (NSRDS-NBS 4-), Washington, 1966, 153頁, 23×29cm, $2.50. , 1967 .

[78]  A. K. Bhatia,et al.  New atomic data for Si/6+/, S/8+/ and Ar/10+/. [for solar atmosphere] , 1979 .

[79]  T. W. Gorczyca,et al.  Auger decay of the photoexcited 2p-1nl Rydberg series in argon , 1999 .

[80]  P. J. Storey,et al.  Transition probabilities for Fe II infrared lines. , 1988 .

[81]  K. Aggarwal,et al.  Electron impact excitation of Ca XX: collision strengths and rate coefficients , 1992 .

[82]  Peter R. Young,et al.  Atomic data from the IRON Project: XL. Electron impact excitation of the Fe? XIV EU , 2000 .

[83]  K A Berrington,et al.  Collision Strengths from a 29-State R-Matrix Calculation on Electron Excitation in Helium , 1993 .

[84]  A. Burgess,et al.  A GENERAL FORMULA FOR THE CALCULATION OF ATOMIC PHOTO-IONIZATION CROSS SECTIONS , 1960 .

[85]  J. A. Tully,et al.  On the analysis of collision strengths and rate coefficients. , 1992 .

[86]  H. Mason,et al.  CHIANTI - an atomic database for emission lines - I. Wavelengths greater than 50 Å , 1997 .

[87]  P G Burke,et al.  Electron-impact-excitation collision strengths for Be-like ions: II. Intermediate-energy region and collision rates , 1985 .

[88]  K. Berrington,et al.  RMATRX1: Belfast atomic R-matrix codes , 1995 .

[89]  Claudio Mendoza,et al.  Transition probabilities for forbidden lines in the 3p2 configuration – II. , 1982 .

[90]  A. Dalgarno,et al.  Charge transfer of multiply charged ions with hydrogen and helium: quantal calculations. , 1980 .

[91]  P. Davies,et al.  Radiation Damping in the Optical Continuum , 1969 .

[92]  Richard McCray,et al.  Efficiency of the Bowen fluorescence mechanism in static nebulae , 1980 .

[93]  Robert K. Nesbet,et al.  Addendum. Low-energy electron scattering by atomic oxygen , 1975 .

[94]  C. J. Zeippen,et al.  N I forbidden lines revisited , 1984 .

[95]  Norcross,et al.  Electron-impact excitation of ions in the magnesium sequence. II. S V, Ar VII, Ca IX, Cr XIII, and Ni XVII. , 1986, Physical review. A, General physics.

[96]  Anil K. Pradhan,et al.  Electron-Ion Recombination Rate Coefficients, Photoionization Cross Sections, and Ionization Fractions for Astrophysically Abundant Elements. II. Oxygen Ions , 1999 .

[97]  George A. Doschek,et al.  Fe XXI as an electron density diagnostic in solar flares , 1979 .

[98]  H. L. Zhang,et al.  Relativistic distorted-wave collision strengths and oscillator strengths for the 85 Li-like ions with 8 <- Z <- 92 , 1990 .

[99]  Philip Dufton,et al.  Si III line ratios in the sun , 1983 .

[100]  Caldwell,et al.  Natural widths in open-shell atoms: The K absorption spectrum of atomic oxygen. , 1996, Physical review. A, Atomic, molecular, and optical physics.

[101]  H. L. Zhang,et al.  Relativistic distorted-wave collision strengths and oscillator strengths for the 185Δn=0 transitions with n=2 in the 67 C-like ions with 26≤Z≤92 , 1994 .

[102]  M. G. O'Mullane,et al.  Dielectronic recombination data for dynamic finite-density plasmas - I. Goals and methodology , 2003, astro-ph/0304273.

[103]  K. Aggarwal,et al.  Electron excitation rates among fine structure levels in O III , 1983 .

[104]  Pj Storey,et al.  N III lines for solar diagnostics. , 1979 .

[105]  M. Arnaud,et al.  Iron ionization and recombination rates and ionization equilibrium , 1992 .

[106]  Philip Dufton,et al.  C ii emission lines formed in optically thin plasmas , 1985 .

[107]  Mehmet Acet,et al.  The structure of iron , 2001 .

[108]  H. L. Zhang,et al.  Relativistic distorted wave collision strengths and oscillator strengths for the 71 Na-like ions with 22 ≤ Z ≤ 92☆ , 1990 .

[109]  K M Aggarwal,et al.  Electron impact excitation of Si XIV: collision strengths and rate coefficients , 1992 .

[110]  Manuel A. Bautista.  LETTER TO THE EDITOR: Photoionization of Fe XV from threshold to the K-shell , 2000 .

[111]  Stephen J. Goett,et al.  Electron-impact collision strengths for inner-shell excitation of doubly excited levels from singly excited levels in He-like ions , 1983 .

[112]  C. J. Zeippen,et al.  Atomic data from the IRON Project. V. Effective collision strengths for transitions in the ground configuration of oxygen-like ions. , 1994 .

[113]  V. M. Burke,et al.  Atomic data from the IRON project. II. Effective collision strength S for infrared transitions in carbon-like ions , 1994 .

[114]  Robert David Blum,et al.  Rate coefficients for the excitation of infrared and ultraviolet lines in C II, N III, and O IV , 1992 .

[115]  C. J. Zeippen,et al.  Transition probabilities for forbidden lines in the 2p3 configuration , 1982 .

[116]  C. Johnson,et al.  Electron excitation of the 1s22s22p5 2Po3/2-2Po1/2 transition and analysis of the 1s22s2p6 nl resonances for Ne II and Mg IV , 1987 .

[117]  Sultana N. Nahar.  Electron-ion recombination of Fe v , 1997 .

[118]  Duane A. Liedahl,et al.  New Calculations of Fe L-Shell X-Ray Spectra in High-Temperature Plasmas , 1995 .

[119]  Sergei Nayakshin,et al.  Thermal Instability and Photoionized X-Ray Reflection in Accretion Disks , 1999, astro-ph/9909359.

[120]  Charlotte Froese Fischer,et al.  Multiconfiguration Hartree-Fock Results with Breit-Pauli Corrections for Transitions in the Carbon Sequence , 1985 .

[121]  Shuzo Hattori,et al.  Accurate oscillator strengths for neutral helium , 1984 .

[122]  G. Doschek,et al.  Atomic data and spectral line intensities for Ne-like Fe XVII , 1992 .

[123]  P G Burke,et al.  Electron collision cross sections at low energies for all transitions between the n=1, 2, 3, 4 and 5 levels of atomic hydrogen , 1991 .

[124]  Alan Hibbert,et al.  Electron impact excitation of N iii: fine-structure collision strengths and Maxwellian-averaged rate coefficients , 1994 .

[125]  Manuel A. Bautista,et al.  Atomic data from the Iron Project. XVI. Photoionization cross sections and oscillator strengths for Fe V , 1996 .

[126]  K. Giles.  Rate coefficients for fine structure transitions in [Ne IV] , 1981 .

[127]  M. Seaton,et al.  Atomic data for opacity calculations. VII. Energy levels, f values and photoionisation cross sections for He-like ions , 1987 .

[128]  P. J. Storey,et al.  ATOMIC DATA FROM THE IRON PROJECT. XXV. ELECTRON IMPACT EXCITATION OF FINE-STRUCTURE TRANSITIONS IN THE GROUND CONFIGURATION OF FE XII , 1998 .

[129]  Claudio Mendoza,et al.  Photoionization of the Fe Ions: Structure of the K-Edge , 2003 .

[130]  Alan Hibbert,et al.  Transitions in Fluorine-Like Ions , 1994 .

[131]  Man Mohan,et al.  Electron-impact excitation from the Si(5+) ground state, using the R-matrix method , 1990 .

[132]  Alan Hibbert,et al.  Accurate transition probabilities for spectral lines of N III , 1993 .

[133]  Manuel A. Bautista,et al.  Continuum Fluorescence Excitation of [N I] and [O I] Lines in Gaseous Nebulae , 1999 .

[134]  A. K. Bhatia,et al.  Theoretical atomic structure and electron scattering data for ions in the nitrogen isoelectronic sequence: MG VI, Si VIII, S x, A XII and Ca XIV , 1980 .

[135]  Man Mohan,et al.  Energies, Oscillator Strengths, and Lifetimes for Neon-like Ions Up to Kr XXVII , 1993 .

[136]  Honglin Zhang,et al.  Collision Strengths and Oscillator Strengths for Excitation to the n=3 and 4 Levels of Neon-like Ions , 1987 .

[137]  Barham W. Smith,et al.  Soft X-ray spectrum of a hot plasma. , 1977 .

[138]  M J Seaton,et al.  Atomic data for opacity calculations: XXII. Computations for 2472790 multiplet gf-values in Fe VIII to Fe XIII , 1995 .

[139]  M. Brocklehurst,et al.  Calculations of Level Populations for the Low Levels of Hydrogenic Ions in Gaseous Nebulae , 1971 .

[140]  Anil K. Pradhan,et al.  Atomic data from the Iron Project. XVII. Radiative transition probabilities for dipole allowed and forbidden transitions in Fe III , 1996 .

[141]  B. C. Fawcett.  Computed oscillator strengths and energy levels for potassium-like ions V V, Cr VI, Mn VII, Fe VIII, Co IX, Ni X, and Cu XI with calculated wavelengths and wavelengths derived from established data , 1989 .

[142]  K A Berrington,et al.  Atomic data from the IRON Project. 1: Goals and methods , 1993 .

[143]  Griffin,et al.  Coupling effects for electron-impact excitation in the potassium isoelectronic sequence. , 1989, Physical review. A, General physics.

[144]  C. Mendoza,et al.  On the structure of the iron K edge , 2002 .

[145]  Eric W. Greisen.  FITS: A Remarkable Achievement in Information Exchange , 2003 .

[146]  Gary J. Ferland,et al.  Rate coefficients for charge transfer between hydrogen and the first 30 elements , 1996 .

[147]  David A. Allen.  Forbidden Emission Lines — II , 1987 .

[148]  A. E. Kingston,et al.  Electron Impact Excitation of Al XIII: Collision Strengths and Rate Coefficients , 2001 .

[149]  Alan Hibbert,et al.  Atomic data for opacity calculations: XXIV. The boron-like sequence , 1999 .

[150]  Erhard W. Rothe,et al.  Low-Energy Electron Scattering from Atomic Nitrogen , 1963 .

[151]  H. L. Zhang,et al.  Relativistic distorted-wave collision strengths and oscillator strengths for f-like ions with 22 ≤ Z ≤ 92☆ , 1991 .

[152]  Enrico Landi,et al.  Chianti-an atomic database for euv emission lines , 2000 .

[153]  Manuel A. Bautista,et al.  Photoionization of neutral iron , 1995 .

[154]  Claudio Mendoza,et al.  Atomic data for opacity calculations. XXIII. The aluminium isoelectronic sequence , 1995 .

[155]  Geerd H. F. Diercksen,et al.  Transition probabilities in the lithium sequence , 1993 .

[156]  Francis P. Keenan,et al.  Electron Impact Excitation Rates for Transitions from the Ground State to the n = 2 and 3 levels in Helium-Like Ions , 1987 .

[157]  F. P. Keenan,et al.  Relative emission line strengths for Fe VII in astrophysical plasmas , 1987 .

[158]  C. Mendoza,et al.  Modeling of Iron K Lines: Radiative and Auger Decay Data for Fe II-Fe IX , 2003, astro-ph/0306321.

[159]  P G Burke,et al.  Electron-impact-excitation collision strengths for Be-like ions. I. Low-energy regions , 1981 .

[160]  Da Verner,et al.  Analytic FITS for partial photoionization cross sections. , 1995 .

[161]  J. Callaway,et al.  Electron-impact excitation of hydrogenic ions , 1981 .

[162]  K. A. Berrington,et al.  Effective collision strengths for forbidden transitions in e-N and e-o scattering , 1981 .

[163]  A. Pradhan,et al.  Atomic data for opacity calculations. XI. The carbon isoelectronic sequence , 1989 .

[164]  Per Jönsson,et al.  Computational Atomic Structure: An MCHF Approach , 1997 .

[165]  Manuel A. Bautista,et al.  Ionization Structure and Spectra of Iron in Gaseous Nebulae , 1997, astro-ph/9710073.

[166]  H. Mason,et al.  The Excitation of Several Iron and Calcium Lines in the Visible Spectrum of the Solar Corona , 1975 .

[167]  T. Kato,et al.  Intensity ratios of emission lines from O V ions for temperature and density diagnostics, and recommended excitation rate coefficients , 1990 .

[168]  H. E. Saraph,et al.  Atomic data for opacity calculations. IX. The lithium isoelectronic sequence , 1988 .

[169]  Man Mohan,et al.  CORRIGENDUM: Electron impact excitation of S VIII from its ground state , 1987 .

[170]  Helen E. Mason,et al.  XUV electron density diagnostics for solar flares , 1979 .

[171]  Philip Dufton,et al.  S IV emission-line ratios in the sun , 1982 .

[172]  C. J. Zeippen,et al.  Effective collision strengths for fine-structure forbidden transitions in the 3p3 configuration of Cl III , 1987 .

[173]  Timothy R. Kallman,et al.  Atomic Data Needs for X-Ray Astronomy , 1999 .

[174]  K A Berrington,et al.  Atomic data for opacity calculations. XV. Fe I-IV , 1992 .

[175]  S. O. Kastner,et al.  Atomic parameters for carbon-like S XI , 1987 .

[176]  Sultana N. Nahar,et al.  Total electron-ion recombination of Fe III , 1996 .

[177]  Claudio Mendoza,et al.  Atomic data from the IRON Project. XXXIV. Electron impact excitation of Fe XVI , 1999 .

[178]  David Flower,et al.  Excitation of the Fe XIII spectrum in the solar corona , 1973 .

[179]  Jack Sugar,et al.  Forbidden Lines in ns2npk Ground Configurations and nsnp Excited Configurations of Beryllium through Molybdenum Atoms and Ions , 1986 .

[180]  Claudio Mendoza,et al.  A Complete Set of Radiative and Auger Rates for K-vacancy States in Fe XVIII-Fe XXV , 2003 .

[181]  Stephen J. Goett,et al.  Intermediate-coupling collision strengths for transitions between doubly excited levels produced by electron impact on highly charged He-like ions☆ , 1983 .

[182]  Manuel A. Bautista,et al.  Electron-Ion Recombination of Neutral Iron , 1997 .

[183]  J. C. Pelan,et al.  Atomic data from the IRON Project. IX. Electron excitation of the ^2^P^0^_3/2_-^2^P^0^_1/2_ fine-structure transition in chlorine-like ions, from AR II to NI XII. , 1995 .

[184]  S. O. Kastner,et al.  Collision Strengths and Transition Rates for O III , 1993 .

[185]  Manuel A. Bautista,et al.  Atomic data from the Iron Project - XXVI. Photoionization cross sections and oscillator strengths for Fe IV , 1997 .

[186]  Anil K. Pradhan,et al.  Atomic data from the Iron Project - XXXVII. Electron impact excitation collision strengths and rate coefficients for Fe VI , 1996 .

[187]  C. Mendoza,et al.  Atomic Data for the K-Vacancy States of Fe XXIV , 2002, astro-ph/0207323.

[188]  H. Mason,et al.  Theoretical intensity ratios for the UV lines of Mg VII, Si IX and S XI. [observation of solar atmosphere] , 1978 .

[189]  S. J. Czyzak,et al.  Excitation of forbidden lines in gaseous nebulae - II. Calculations for 3pq ions , 1970, Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences.

[190]  Pj Storey,et al.  FE XIX TRANSITIONS WITHIN THE N=2 COMPLEX , 1985 .

[191]  K. M. Aggarwal.  Electron impact excitation rates for fine-structure transitions in Ne v and Si. IX: An R-matrix approach , 1984 .

[192]  Duane A. Liedahl,et al.  Hydrogen-like Ion Emission in the Spectra of Low-Mass X-Ray Binaries , 1998 .

[193]  P G Burke,et al.  Electron impact excitation of neon-like S VII from its ground state , 1990 .

[194]  P G Burke,et al.  Electron scattering from the fine structure levels within the 1s22s22p2 3Pe ground state of C I , 1987 .

[195]  S. J. Czyzak,et al.  On the Excited Levels of Fe VIII , 1966 .

[196]  Kenneth L. Bell,et al.  Effective collision strengths for O II , 1993 .

[197]  D. Pequignot,et al.  Erratum; Radiative and Dielectronic Recombination Coefficients for COM plex Ions , 1976 .

[198]  Dmitri A. Verner,et al.  SUBSHELL PHOTOIONIZATION CROSS-SECTIONS AND IONIZATION ENERGIES OF ATOMS AND IONS FROM HE TO ZN , 1993 .

[199]  Francis P. Keenan,et al.  Effective collision strengths among fine-structure levels of CA XV: erratum , 1991 .

[200]  Kjh Phillips,et al.  A comparison of theoretical and solar-flare intensity ratios for the Fe XIX X-ray lines , 1989 .

[201]  Nigel R. Badnell,et al.  Electric Field Effects on Dielectronic Recombination in a Collisional-Radiative Model , 1993 .

[202]  Claudio Mendoza,et al.  Recent advances in atomic calculations and experiments of interest in the study of planetary nebulae , 1983 .

[203]  Bar-Shalom,et al.  Electron collision excitations in complex spectra of ionized heavy atoms. , 1988, Physical review. A, General physics.

[204]  Sultana N. Nahar.  Atomic data from the Iron Project XLV. Relativistic transition probabilities for carbon-like Ar XIII and Fe XXI using Breit-Pauli R-matrix method , 2000 .

[205]  H. Nussbaumer,et al.  Forbidden transitions in the C I sequence , 1979 .

[206]  John F. Seely,et al.  Atomic data and spectral line intensities for the nitrogen isoelectronic sequence (Ar XII through Kr XXX) , 1986 .