Mg IX - VERSION 8.0


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.

     
    %filename: mg_9.elvlc
    %Observed energy levels: Ralchenko, Y., et al., 2005, NIST Atomic Spectra Database, 
        Version 3.0, NIST Physical Reference Data
    % 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
    % Theoretical energy levels (99-108): 27-conf model from Bhatia & Landi 2007, ADNDT, 93, 742
    %Theoretical energy levels: Del Zanna G., Rozum I., Badnell N., 2008, A&A 487, 1203
    % produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
    %
    % G. Del Zanna, Dec  2009
     -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.

     
    %filename: mg_9.wgfa
    %Observed energy levels: Ralchenko, Y., et al., 2005, NIST Atomic Spectra Database,
          Version 3.0, NIST Physical Reference Data
    %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
    %Theoretical energy levels (levels 1-98): Del Zanna G., Rozum I., Badnell N., 2008, A&A 487, 1203
    %Theoretical energy levels (levels 99-108): 27-conf model from Bhatia & Landi 2007, ADNDT, 93, 742
    %A values and oscillator strengths (levels 1-98): Del Zanna G., Rozum I., Badnell N., 2008, A&A 487, 1203.
    %A values and oscillator strengths (levels 99-108): 27-conf model from Bhatia & Landi 2007, ADNDT, 93, 742
    % produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
    %
    %  G. Del Zanna, Dec  2010
    

  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).

     
    %filename: mg_9.splups
    %Oscillator strengths (levels 1-98): Del Zanna G., Rozum I., Badnell N., 2008, A&A 487, 1203.
    %Oscillator strengths (levels 99-108): Bhatia & Landi 2007, ADNDT, 93, 742
    %effective collision strengths (levels 1-98): Del Zanna G., Rozum I., Badnell N., 2008, A&A 487, 1203.
    %Collision strengths (levels 99-108): Bhatia & Landi 2007, ADNDT, 93, 742
    %Comment: due to the resonance structure, fits are accurate only within  5.0 < log T < 7.0
    % produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
    %
    % G. Del Zanna, Dec  2009
    
    

  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 table below contains the radiative data of the brightest lines sorted in wavelength

    mg_9_table.html (html table)

    Page created by Giulio Del Zanna on Fri Sep 18 13:28:26 2015