Ca VI - VERSION 8.0


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

  1. ca_6.elvlc (energy levels)
  2. contains the energy levels (in cm-1). It includes both experimental and theoretical values of the levels energies.

     
    %filename: ca_6.elvlc
    %observed energies: Ralchenko et al. (2008), NIST Atomic Spectra Database (version 3.1.5), downloaded on 21-Jul-2009
    %theoretical energies: Hudson, CE, 2009, Phys. Scripta, 79, 035301
    % produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
    %
    % P.R. Young - 21 Jul 2009
     
    

  3. ca_6.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_6.wgfa
    %observed energies: Ralchenko et al. (2008), NIST Atomic Spectra Database (version 3.1.5), downloaded on 21-Jul-2009
    %A-values:  Mendoza C., & Zeippen, C.J., 1982, MNRAS, 198, 127
    % produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
    %
    % P.R. Young - 21 Jul 2009
    

  5. ca_6.scups (electron collision data)
  6. contains the effective electron collision strengths scaled according to the rules formulated by Burgess and Tully (1992).

     
    %filename: ca_6.splups
    %Theoretical energy levels: Hudson, C.E., 2009, Phys. Scripta, 79, 035301
    %Effective collision strengths: Hudson, C.E., 2009, Phys. Scripta, 79, 035301
    %Comment: The effective collision strengths were tabulated between logT=4.5 and 6.5 and
    the spline fits are accurate to 0.30 % or better over this range.
    Hudson only gave LS energies (which I have taken from her 1863 configuration
    calculation in Table 3), and I have used the observed energy splittings from
    the .elvlc file to split the 2D and 2P terms. The observed energy splitting has
    been subtracted from the LS energy to derive the energy of the low-J component
    of the term.
    % produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
    %
    %       P.R. Young - 22-Jul-2009
    
    

  7. (proton collisional data) Not available in this VERSION.

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

    ca_6_table.html (html table)

    Page created by Giulio Del Zanna on Fri Sep 18 13:25:32 2015