Ca XII - VERSION 8.0


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

  1. ca_12.elvlc (energy levels)
  2. contains the energy levels (in cm-1). It includes both experimental and theoretical values of the levels energies.

     
    %filename: ca_12.elvlc
    %Observed energy levels (n=2): Edlen, B., 1983, Physica Scripta, 28, 51
    %Observed energy levels (n=3): Feldman, U., Doschek, G.A., Cowan, R.D., & Cohen, L. 1973, J. Opt. Soc. Am., 63, 1445
    %Theoretical energy levels: Witthoeft, M.C., Whiteford, A.D., & Badnell, N.R. 2007, J.Phys.B, 40, 2969
    % produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
    %
    %   E. Landi - Jan 2007
     
    

  3. ca_12.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: ca_12.wgfa
    %Experimental energy levels (n=2): Edlen, B., 1983, Physica Scripta, 28, 51
    %Experimental energy levels (n=3): Feldman, U., Doschek, G.A., Cowan, R.D., & Cohen, L. 1973, J. Opt. Soc. Am., 63, 1445
    %Theoretical energy levels: Witthoeft, M.C., Whiteford, A.D., & Badnell, N.R. 2007, J.Phys.B, 40, 2969
    %Radiative data: Witthoeft, M.C., Whiteford, A.D., & Badnell, N.R. 2007, J.Phys.B, 40, 2969
    % produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
    %
    % E. Landi - Jan 2007
    

  5. ca_12.scups (electron collision data)
  6. contains the effective electron collision strengths scaled according to the rules formulated by Burgess and Tully (1992).

     
    %filename: ca_12.splups
    %Oscillator strengths: Witthoeft, M.C., Whiteford, A.D., & Badnell, N.R. 2007, J.Phys.B, 40, 2969
    %Effective collision strengths: Witthoeft, M.C., Whiteford, A.D., & Badnell, N.R. 2007, J.Phys.B, 40, 2969
    %comment: effective collision strengths are published for temperatures in the range  4.5 < Log T <  8.5
    %comment: effective collision strengths are USED for temperatures in the range  4.9 < Log T <  7.5
    %comment: data at very high or very low temperatures were sometimes discarded to improve the fit. At these
    temperatures the Ca XII abundance is negligible under equilibrium.
    % produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
    %
    % E. Landi - Jan 2007
    
    

  7. ca_12.psplups (proton collision data)
  8. contains the spline fits to the scaled proton collision strengths.

     
    
    %filename: ca_12.psplups
    %rates: Bely, O., Faucher, P., 1970, A&A 6, 88
    %energies: Observed energies from .elvlc file.
    %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
    %
    % Peter Young   8-Jun-2001
    


    The html tables below contain the radiative data of the brightest lines sorted in wavelength

    Page created by Giulio Del Zanna on Fri Sep 18 13:25:27 2015