Ca XVIII d - VERSION 8.0


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

  1. ca_18d.elvlc (energy levels)
  2. contains the energy levels (in cm-1). It includes both experimental and theoretical values of the levels energies.

     
    %filename: ca_18d.elvlc
    %observed energy levels: Sugar, J., Corliss, C., 1979, J.Phys.Chem.Ref.Data, 8, 865
    %observed energy levels: Kelly, R.L., 1987, J.Phys.Chem.Ref.Data, 16, Suppl. 1
    %comments:  4s, 4p and 4p levels from Kelly 
    %Theoretical energy levels: Zhang, H.L., Sampson, D.H., Fontes, C.J., 1990, ADNDT, 44, 31
    %energy levels (above IP):  calculations of Safronova reported in Kato et al., 1997, ADNDT, 67, 225
    %comment:  additional observed energies
    
     36    21 1s2s2p(1P)      2  1 P* 1.5  4   31352000.        285.700447             0.       0.000000
     37    22 1s2p2           2  2 D  1.5  4   31484000.        286.903319             0.       0.000000
     38    22 1s2p2           2  2 D  2.5  6   31486000.        286.921544             0.       0.000000
     39    22 1s2p2           2  1 P  1.5  4   31551000.        287.513868             0.       0.000000
    
    %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
    %
    % Ken Dere   Jan 1999
     
    

  3. ca_18d.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_18d.wgfa
    %observed energy levels: Sugar, J., Corliss, C., 1979, J.Phys.Chem.Ref.Data, 8, 865
    %observed energy levels: Kelly, R.L., 1987, J.Phys.Chem.Ref.Data, 16, Suppl. 1
    %comments:  4s, 4p and 4p levels from Kelly 
    %theoretical energy levels: Zhang, H.L., Sampson, D.H., Fontes, C.J., 1990, ADNDT, 44, 31
    %oscillator strengths: Zhang, H.L., Sampson, D.H., Fontes, C.J., 1990, ADNDT, 44, 31
    %oscillator strengths: Martin, I., Karwowski, J., Diercksen, G.H.F., Barrientos, C., 1993, A&AS, 100, 595
    %oscillator strengths: Wiese, W.L., Smith, M.W., Glennon, B.M., 1966, Atomic Transition Probabilities, NSRDS-NBS-4
    %note:  hydrogenic f values
    %A values (above IP):  calculations of Safronova reported in Kato et al., 1997, ADNDT, 67, 225.
    %A values (Transitions between n=2 to 1s2lnl): calculations of Cornille reported in Kato et al., 1997, ADNDT, 67, 225
    %comment:  the following lines identified by Feldman, U., Doschek, G., Kreplin, R.W., 1980, ApJ, 238, 365
        3   39         3.2033      1.342e+00      2.180e+14         1s22p 2P1.5 - 1s2p(3P)2p 2P1.5    (a)
        2   43         3.2066      6.152e-01      9.980e+13         1s22p 2P0.5 - 1s2p(1P)2p 2D1.5    (k)
    %comment: theoretical energies have been used as experimental values for the dielectronic transitions
    %comment: correction (E.Landi - Nov 2003): replaced 4.02 wavelengths for innershell lines with Safronova's values. 
              It slightly improves the positions of Ca XVIIId lines at around 3.2 A.
    %comment: level identification for levels 80, 86, 91, 97 in Cornille's data are uncertain 
    %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
    %
    % Ken Dere and Enrico Landi - Aug 2004
    

  5. ca_18d.scups (electron collision data)
  6. contains the effective electron collision strengths scaled according to the rules formulated by Burgess and Tully (1992).

     
    %filename: ca_18d.splups
    %collision strength values from calculations of Safronova reported in Kato et al., 1997, ADNDT, 67, 225
    %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
    %
    % Ken Dere - Jan 1999
    
    


    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 13:25:31 2015