Si III - VERSION 8.0


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

  1. si_3.elvlc (energy levels)
  2. contains the energy levels (in cm-1). It includes both experimental and theoretical values of the levels energies.

     
    %filename: si_3.elvlc
    %energy levels: Martin, W.C., Sugar, J., Musgrove, A., Dalton, G.R., 1995, 
       NIST Database for Atomic Spectroscopy, Version 1.0, NIST Standard Reference Database 61.
    %theoretical energy levels: Baluja,K.L.,Hibbert,A., J.Phis.B, 1980, 13, L327
    %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
    %
    % E. Landi 1995
     
    

  3. si_3.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: si_3.wgfa
    %energy levels: Martin, W.C., Sugar, J., Musgrove, A., Dalton, G.R., 1995,
      NIST Database for Atomic Spectroscopy, Version 1.0, NIST Standard Reference Database 61
    %oscillator strengths: Dufton P.L., Hibbert A., Kingston A.E., Doschek G.A., 1983, ApJ, 274, 420
    %oscillator strengths: P.R.Young (DAMTP, Un. of Cambridge, UK), SUPERSTRUCTURE calculations, 1996
    %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic database collaboration
    %
    %   E. Landi 1996
    

  5. si_3.scups (electron collision data)
  6. contains the effective electron collision strengths scaled according to the rules formulated by Burgess and Tully (1992).

     
    %filename: si_3.splups
    %oscillator strengths: Dufton P.L., Hibbert A., Kingston A.E., Doschek G.A., 1983, ApJ, 274, 420
    %oscillator strengths: P.R.Young (DAMTP, Un. of Cambridge, UK), SUPERSTRUCTURE calculations, 1996
    %effective collision strengths: Dufton, P.L., Kingston, A.E., 1989, MNRAS, 241, 209
    %comment: effective collision strengths were provided in the temperature range 3.8 < Log T < 5.2
    %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
    %
    % E. Landi 1995
    
    

  7. si_3.psplups (proton collision data)
  8. contains the spline fits to the scaled proton collision strengths.

     
    
    %filename: si_3.psplups
    %rates: Landman, D.A., Brown, T., 1979, ApJ 232, 636
    %energies: Observed energies from CHIANTI .elvlc file.
    %comment: Fits valid for temperatures 1.26e4 to 1.59e5 K.
    %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
    %
    % Peter Young   18-May-2001
    


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

    si_3_table.html (html table)

    Page created by Giulio Del Zanna on Fri Sep 18 13:29:43 2015