Si III - VERSION 10.0.2


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.

     
    
    Theoretical energies:
    Fernandez-Menchero, L., Del Zanna, G. and Badnell, N.R.
    A&A, 2014, 572, A115
    doi = {10.1051/0004-6361/201424849
    
    Note: only  bound levels have been retained.
    
    Observed energies:
    Del Zanna, G.,  Fernandez-Menchero, L. and Badnell, N. R., 2015, A&A, 574, A99
      doi		= {10.1051/0004-6361/201424394}
    
    
    Produced as part of the 'CHIANTI' atomic data base collaboration by
    Giulio Del Zanna, May 2020
    
     
     -1
     
    

  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.

     
    Theoretical energies:
    Fernandez-Menchero, L., Del Zanna, G. and Badnell, N.R.
    A&A, 2014, 572, A115
    doi = {10.1051/0004-6361/201424849
    
    Note: only  bound levels have been retained.
    
    
    Observed energy levels:
    Del Zanna, G.,  Fernandez-Menchero, L. and Badnell, N. R., 2015, A&A, 574, A99
      doi		= {10.1051/0004-6361/201424394}
    
     Produced as part of the 'CHIANTI' atomic data base collaboration by
    Giulio Del Zanna, May 2020
    
    

  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).

     
    
    
    Giulio Del Zanna, May 2020
    Produced as part of the 'CHIANTI' atomic data base collaboration by
    
    Note: only  bound levels have been retained.
    
    doi = {10.1051/0004-6361/201424849
    A&A, 2014, 572, A115
    Fernandez-Menchero, L., Del Zanna, G. and Badnell, N.R.
    
    oscillator strengths and effective collision strengths:
    
    

  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 Wed Jun 8 16:14:20 2022