C II - VERSION 8.0


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

  1. c_2.elvlc (energy levels)
  2. contains the energy levels (in cm-1). It includes both experimental and theoretical values of the levels energies.

     
     
     Experimental energies:
    Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2013).
    NIST Atomic Spectra Database (ver. 5.1), see http://physics.nist.gov/asd
    
    
    Theoretical energies:
    G Y Liang, N R Badnell and G Zhao  A&A 547, A87 (2012)
       DOI: 10.1051/0004-6361/201220277
    
     Produced for the CHIANTI database v.8 by G. Del Zanna 28 Apr 2014
     
    
     -1
     
    

  3. c_2.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, gf and A-values:
    G Y Liang, N R Badnell and G Zhao  A&A 547, A87 (2012)
       DOI: 10.1051/0004-6361/201220277
       
       Note: only transitions with a branching ratio above 10^-5 
    have been retained.
    
    A-values for transitions from some of the lower levels 
    are from Correge, G. & Hibbert, A. 2004, ADNDT, 86, 19
    
    
    Produced for the CHIANTI database v.8 by Giulio Del Zanna  Oct 2013
    
    
    

  5. c_2.scups (electron collision data)
  6. contains the effective electron collision strengths scaled according to the rules formulated by Burgess and Tully (1992).

     
    
    Data  from
    G Y Liang, N R Badnell and G Zhao  A&A 547, A87 (2012)
    DOI: 10.1051/0004-6361/201220277
    
    Produced for the CHIANTI database v.8 by G. Del Zanna 5 May 2014
    
    
    
    

  7. c_2.psplups (proton collision data)
  8. contains the spline fits to the scaled proton collision strengths.

     
    
    %filename: c_2.psplups
    %rates: Foster VJ, Keenan FP, Reid RHG, ADNDT 67, 99, 1997
    %energies: From .elvlc file, experimental energies
    %comment: The rate coefficients are in units cm^3/s.
    %comment: Fits are valid for temperatures 2e3 to 4e5 K.
    %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
    %
    % Peter Young   15-May-2001
    


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

    c_2_table.html (html table)

    Page created by Giulio Del Zanna on Fri Sep 18 13:25:23 2015