Fe XII - VERSION 8.0


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

  1. fe_12.elvlc (energy levels)
  2. contains the energy levels (in cm-1). It includes both experimental and theoretical values of the levels energies.

     
     
     Experimental energies:
    Del Zanna, G. & Mason, H. E. 2005, A&A, 433, 731
    Del Zanna, G. 2012, A&A, 546, A97
    
    Theoretical energies:
    
    Del Zanna, G., Storey, P. J., Badnell, N. R., & Mason, H. E. 2012, A&A, 543,A139
    Note: the theoretical energies are the 'best energies', i.e. 
    are the empirically-adjusted theoretical energies.
    
    
    Produced for the CHIANTI database v.8 by Giulio Del Zanna  Jun 2014
    
    
     -1
     
    

  3. fe_12.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.

     
    
    Experimental energies:
    Del Zanna, G. & Mason, H. E. 2005, A&A, 433, 731
    Del Zanna, G. 2012, A&A, 546, A97
    
    Theoretical energies, gf and A-values::
    
    Del Zanna, G., Storey, P. J., Badnell, N. R., & Mason, H. E. 2012, A&A, 543,A139
    Note: the theoretical energies are the 'best energies', i.e. 
    are the empirically-adjusted theoretical energies.
    
    Only transitions with a branching ratio of 10^-5 have been retained.
    
    
    Produced for the CHIANTI database v.8 by Giulio Del Zanna  Jun 2014
    
    
     
    

  5. fe_12.scups (electron collision data)
  6. contains the effective electron collision strengths scaled according to the rules formulated by Burgess and Tully (1992).

     
    
    Data from:
    Del Zanna, G., Storey, P. J., Badnell, N. R., & Mason, H. E. 2012, A&A, 543,A139
    
    Produced for the CHIANTI database v.8 by Giulio Del Zanna  Dec 2013
    
    
    
    

  7. fe_12.psplups (proton collision data)
  8. contains the spline fits to the scaled proton collision strengths.

     
    
    %filename: fe_12.psplups
    %rates: Landman, D.A., 1978, ApJ 220, 366
    %energies: Landman, D.A., 1978, ApJ 220, 366
    %comment: Errors (comparing original rates with those derived from the above 
        splines) are at most 2\% for individual points. For transition 3-4, 
        a good fit could not be found, likely implying errors in the original 
        data values. Errors of up to 4.5\% are found for this transition.
    %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
    %
    % Peter Young   7-Jun-2001
    


    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 13:26:36 2015