Fe XVII - VERSION 8.0


The CHIANTI database has the following primary ASCII files for this ion:

  1. fe_17.elvlc (energy levels)
  2. contains the energy levels (in cm-1). It includes both experimental and theoretical values of the levels energies.

     
    %filename: fe_17.elvlc
    %Observed energy levels (up to n=5): Del Zanna, G. & Ishikawa, Y. 2009, A&A, 508, 1517 
    % Observed energy levels (n=6,7): from the wavelength measurements of Brown, G.V., Beiersdorfer, P., Liedahl, D.A., Widmann, K., & Kahn, S.M.  1998, ApJ, 502, 1015
    %Theoretical energies for levels 1-209 are from Liang, G. Y. & Badnell, N. R. 2010, A&A, 518, A64
    %Theoretical energies for levels 210-267 are from Landi & Gu, 2006, ApJ, 640, 1171 
    % produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
    %
    %   G. Del Zanna -  May 2011
     
    

  3. fe_17.wgfa (radiative data)
  4. contains wavelengths, gf and A values of the transitions. The wavelengths are based on the experimental energy levels and should be the best available. Wavelengths calculated from the theoretical energies are of an indeterminate accuracy and their values are presented as negative values of the calculated wavelength.

     
    
    Theoretical energies, A and gf values for levels 1-209 are from Liang, G. Y. & Badnell, N. R. 2010, A&A, 518, A64
    
    Theoretical energies, A and gf values for levels 210-267 are from Landi & Gu, 2006, ApJ, 640, 1171 
    
    Observed energy levels (up to n=5): Del Zanna, G. & Ishikawa, Y. 2009, A&A, 508, 1517 
    
    Observed energy levels (n=6,7) from the wavelength measurements of 
    Brown, G. V., Beiersdorfer, P., Liedahl, D. A., Widmann, K., & Kahn, S. M.
    1998, ApJ, 502, 1015
    
    Produced for the CHIANTI database by G. Del Zanna on  Oct 26 2011
    
    
    

  5. fe_17.scups (electron collision data)
  6. contains the effective electron collision strengths scaled according to the rules formulated by Burgess and Tully (1992).

     
    
    Oscillator strengths and effective collision strengths
    for levels 2-209 are from Liang, G. Y. & Badnell, N. R. 2010, A&A, 518, A64
    The effective collision strengths were given in the temperature range  5.7x10^4 < T < 5.8x10^8
    
    
    
    Oscillator strengths and effective collision strengths form the ground state
    to levels 210-267 are obtained from spline fits to the Landi & Gu, 2006, ApJ, 640, 1171
    data.
    The effective collision strengths were given in the temperature range 1.16e6 < T < 5.8e7
    
    Produced for the CHIANTI v.8 database by G. Del Zanna on  2014 June 25.
    
    
    
    

  7. (proton collisional data) Not available in this VERSION.
  8. fe_17.reclvl (total recombination population rates)
  9.  
    %filename: fe_17.rec
    %Total recombination population rate: Gu, M.F., 2003, ApJ, 582, 1241
    %produced as part of the Arcetri/Cambridge/NRL CHIANTI atomic data base collaboration
    %
    % Enrico Landi - Feb 2004
    

  10. fe_17.cilvl (collisional ionization population rates)
  11.  
    %filename: fe_17.ci
    %Collisional ionization population rate: Gu, M.F., 2003, ApJ, 582, 1241
    %produced as part of the Arcetri/Cambridge/NRL CHIANTI atomic data base collaboration
    %
    % Enrico Landi - Feb 2004
    


    The html tables below contain the radiative data of the brightest lines sorted in wavelength

    Page created by Giulio Del Zanna on Fri Sep 18 13:26:58 2015