Mg IX - VERSION 10.0.2


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

  1. mg_9.elvlc (energy levels)
  2. contains the energy levels (in cm-1). It includes both experimental and theoretical values of the levels energies.

     
     
     Theoretical energies:
    Fernandez-Menchero, Del Zanna and Badnell, A&A, 2014, 566, A104
    doi = {10.1051/0004-6361/201423864}
    
    Observed energy levels  are from the previous CHIANTI version and NIST.
     observed energy levels (104, 106): Hoory, S., et al., 1970, J.Opt.Soc.Am., 60, 1449
     observed energy levels (107, 108): Average of Kelly 1987 and NIST values
    
    Note: only the bound levels up to n=5 have been retained. 
    
    Produced as part of the 'CHIANTI' atomic data base collaboration by
    Giulio Del Zanna, May 2020
    
    
     -1
     
    

  3. mg_9.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.

     
    
     gf-values, A-values and theoretical energies:
    Fernandez-Menchero, Del Zanna and Badnell, A&A, 2014, 566, A104
    doi = {10.1051/0004-6361/201423864}
    Only transition probabilities with a branching ratio
    greater than 10^(-5) have been retained.
    
    
    gf-values, A-values for the n=2,3 (lowest 20 levels):
    MBPT calculations by  Wang, K. et al., 2015, ApJS,  218, 16
    doi = {10.1088/0067-0049/218/2/16}
    
    Observed energies are from the previous CHIANTI version and NIST.
     observed energy levels (104, 106): Hoory, S., et al., 1970, J.Opt.Soc.Am., 60, 1449
     observed energy levels (107, 108): Average of Kelly 1987 and NIST values
    
    
    Note: only the bound levels up to n=5 have been retained.
    
    Produced as part of the 'CHIANTI' atomic data base collaboration by
    Giulio Del Zanna, May 2020
    
    
    
    

  5. mg_9.scups (electron collision data)
  6. contains the effective electron collision strengths scaled according to the rules formulated by Burgess and Tully (1992).

     
    
    Giulio Del Zanna, May 2020
    Produced as part of the 'CHIANTI' atomic data base collaboration by
    
    Note: only the bound levels up to n=5 have been retained.
    
    doi = {10.1051/0004-6361/201423864}
    Fernandez-Menchero, Del Zanna and Badnell, A&A, 2014, 566, A104
    oscillator strengths and effective collision strengths:
    
    

  7. mg_9.psplups (proton collision data)
  8. contains the spline fits to the scaled proton collision strengths.

     
    
    %filename: mg_9.psplups
    %rates: Ryans R.S.I., Foster-Woods V.J, Copeland F., Keenan F.P., Matthews A., Reid R.H.G., 1998, ADNDT 70, 179-229
    %energies: CHIANTI database, ver.1, Dere et al., A&AS 125, 149, 1997
    %comment: Fit valid for temp. range 1e5 to 3e7 K.
    %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
    %
    % Peter Young  19-Oct-00
    


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

    Page created by Giulio Del Zanna on Wed Jun 8 16:07:21 2022