Mg VII - VERSION 8.0


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

  1. mg_7.elvlc (energy levels)
  2. contains the energy levels (in cm-1). It includes both experimental and theoretical values of the levels energies.

     
    %filename: mg_7.elvlc
    %energy levels (level 2): Kelly, D.M., & Lacy, J.H., 1995, ApJ, 454, L161
    %energy levels (level 3): Kelly, D.M., & Lacy, J.H., 1995, ApJ, 454, L161
    %energy levels (level 3): Feuchtgruber, H., Lutz, D.A., Beintema, E.A. et al., 1997, ApJ, 487, 962
    %energy levels (level 4): Young, P.R., Dupree, A.K., Espey, B.R., & Kenyon, S.J., 2006, ApJ, 650, 1091
    %energy levels:  Martin, W. C., Sugar, J., Musgrove, A., and Dalton, G. R., 1995, NIST Database for Atomic Spectroscopy, Version 1.0, NIST Standard Reference Database 61.
    %Theoretical energy levels: Bhatia, A.K., Doschek, G.A., 1995, ADNDT, 60, 145
    %comment: the Kelly & Lacy and Feuchtgruber measurements are combined to give the level 3 energy
    % produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
    %
    % P.R. Young - 3-Dec-2007
     
    

  3. mg_7.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_7.wgfa
    %energy levels (level 2): Kelly, D.M., & Lacy, J.H., 1995, ApJ, 454, L161
    %energy levels (level 3): Kelly, D.M., & Lacy, J.H., 1995, ApJ, 454, L161
    %energy levels (level 3): Feuchtgruber, H., Lutz, D.A., Beintema, E.A. et al., 1997, ApJ, 487, 962
    %energy levels (level 4): Young, P.R., Dupree, A.K., Espey, B.R., & Kenyon, S.J., 2006, ApJ, 650, 1091
    %energy levels:  Martin, W. C., Sugar, J., Musgrove, A., and Dalton, G. R., 1995, NIST Database for Atomic Spectroscopy, Version 1.0, NIST Standard Reference Database 61.
    %Theoretical energy levels: Bhatia, A.K.,Doschek, G.A., ADNDT, 60, 145, 1995
    %oscillator strengths: Bhatia, A.K., Doschek, G.A.,1995, ADNDT, 60, 145
    %A-values (2-4 and 3-4 transitions): Storey PJ, Zeippen CJ, MNRAS 312, 813, 2000
    %A-values (other ground transitions): Galavis, M.E., Mendoza, C., Zeippen, C.J., 1997, A&AS, 123, 159
    %comment: the Kelly & Lacy and Feuchtgruber measurements are combined to give the level 3 energy
    % produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
    %
    %  P.R. Young - 3-Dec-2006
    

  5. mg_7.scups (electron collision data)
  6. contains the effective electron collision strengths scaled according to the rules formulated by Burgess and Tully (1992).

     
    %filename: mg_7.splups
    %oscillator strengths: Bhatia, A.K., Doschek, G.A., 1995, ADNDT, 60, 145
    %upsilons (ground configuration, levels 1 to 5): Lennon, D.J., Burke, V.M., 1994, A&AS, 103, 273
    %upsilons (ground configuration, levels 1 to 5): Aggarwal, K, 1984, Sol. Phys., 94, 75
    %upsilons (ground configuration, levels 1 to 5): Aggarwal, K, 1984, ApJS, 56, 303
    %collision strengths (all other transitions): Bhatia, A.K., Doschek, G.A., 1995, ADNDT, 60, 145
    %comment: The Lennon & Burke upsilons are tabulated between logT=3.0-5.0, and the
    T_max of Mg VII is 5.7. The Aggarwal data go up to logT=7.7. I've thus
    used all of the Lennon & Burke data and appended the Aggarwal data for
    temperatures logT=5.2-7.6. It was necessary to scale the Aggarwal by
    the ratio of the Lennon & Burke data to the Aggarwal data at logT=5.0
    to ensure a smooth join between the two data-sets. The scale factor
    varied from 0.82 (4-5) to 1.19 (1-5).
    The fits to the ground configuration upsilons are accurate to 1.2% over
    the temperature range logT=3.8-6.2.
    % produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
    %
    %  P.R. Young and E.Landi - 3-Dec-2007
    
    

  7. mg_7.psplups (proton collision data)
  8. contains the spline fits to the scaled proton collision strengths.

     
    
    %filename: mg_7.psplups
    %rates: Ryans R.S.I., Foster-Woods V.J, Keenan F.P., Reid R.H.G., 1999, ADNDT 73, 1-42
    %energies: CHIANTI database, ver.1, Dere et al., A&AS 125, 149, 1997
    %comment: Fits valid for temperatures 1.5e5 to 1.5e7 K.
    %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
    %
    % Peter Young   10-Sep-2002
    


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

    mg_7_table.html (html table)

    Page created by Giulio Del Zanna on Fri Sep 18 13:28:24 2015