C III - VERSION 10.1


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

  1. c_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, Del Zanna and Badnell, A&A, 2014, 566, A104
    doi = {10.1051/0004-6361/201423864}
    
    Observed energies: NIST Atomic Spectra Database, (ver. 5.7.1), [Online]
    https://physics.nist.gov/PhysRefData/ASD/lines_form.html
    
    Note: only the bound levels up to n=5 have been retained.
    (The  calculations also included autoionizing levels.)
    
    Produced as part of the 'CHIANTI' atomic data base collaboration by
    Giulio Del Zanna, May 2020
    
    -1
     
    

  3. c_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.

     
    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):
    MCHF calculation by
    G. Tachiev and C. Froese Fischer, Method: MCHF (ab initio), J. Phys. B 32 5805, 1999
    https://nlte.nist.gov/MCHF/periodic.html
    
    
    Observed energies: NIST Atomic Spectra Database,  (ver. 5.7.1), [Online]
    https://physics.nist.gov/PhysRefData/ASD/lines_form.html
    
    Note: only the bound levels up to n=5 have been retained as the rates
    for the n=6,7 are not accurate. The calculations also included autoionizing levels.
    
    
    Produced as part of the 'CHIANTI' atomic data base collaboration by
    Giulio Del Zanna, May 2020
    
     
    %File processed with wgfa_tidy by pryoung on 31-May-2023
    

  5. c_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
    
    
    for the n=6,7 are not accurate. The calculations also included autoionizing levels.
    Note: only the bound levels up to n=5 have been retained as the rates
    
    doi = {10.1051/0004-6361/201423864}
    Fernandez-Menchero, Del Zanna and Badnell, A&A, 2014, 566, A104
    oscillator strengths and effective collision strengths:
    
    
    

  7. c_3.psplups (proton collision data)
  8. contains the spline fits to the scaled proton collision strengths.

     
    
    %filename: c_3.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: Wiese W.L., Fuhr J.R., Deters T.M., 1996, J. Phys. Chem. Ref. Data, Monograph #7
    %comment: Fits valid for 1e4 to 2.5e6 K.
    %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
    %
    % Peter Young  23-Oct-01
    


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

    c_3_table.html (html table)

    Page created by Giulio Del Zanna on Mon Jun 26 11:14:34 2023