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

ca_18.elvlc (energy levels)

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

 
%energy levels (1-24): Martin, W.C., Zalubas, R., 1983, J. Phys. Chem. Ref. Data, 12, 323.
%Theoretical energy levels (1-24): Zhang,H.L., Sampson,D.H., Fontes,C.J., ADNDT, 44, 31.
%Innershell energy levels: Fuhr, J.R., Kelleher, D.E., Martin, W.C., Musgrove, A., Sugar, J., Wiese, W.L.,
        Dalton, G.R., Dragoset, R.A., Mohr, P.J., Olsen, K., Reader, J., Saloman, E.B., Sansonetti, C.J.,
        Wiersma, G., "NIST Atomic Spectra Database" Ver. 2.0, March 1999, NIST Physical Reference Data
%Innershell theoretical energy levels: Goett, S.J., Sampson, D.H., 1983, ADNDT, 29, 535
%produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
%
% E. Landi - July 1999
 

ca_18.wgfa (radiative data)

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.

 
%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
%oscillator strengths: H.L. Zhang, D.H. Sampson, C.J. Fontes, 1990, ADNDT, 44, 31
%oscillator strengths: Martin, I., Karwowski, J., Diercksen, G.H.F., Barrientos, C., 1993, A&AS, 100, 595
% Innershell radiative data: Goett, S.J., Sampson, D.H., 1983, ADNDT, 29, 535
%A values (autoionizing): Vainshtein, L.A., Safronova, U.I., 1978, ADNDT, 21, 49
   and 1980, ADNDT, 25, 311 - updated by U.I. Safronova, 1999
%Comment: Other radiative data were calculated using SUPERSTRUCTURE with a 23 configuration model
%comment:  the following lines identified by Feldman, U., Doschek, G., Kreplin, R.W., 1980, ApJ, 238, 365
    2   36         3.2066      5.910e-01      9.615e+13        1s2.2p 2P0.5 -         1s.2p2 2D1.5   (k)              
    3   39         3.2033      1.344e+00      2.192e+14        1s2.2p 2P1.5 -         1s.2p2 2P1.5   (a)              
%comment:  unobserved lines
    1   26        -3.2260      1.103e-03      3.532e+11        1s2.2s 2S0.5 -  1s.(2S).2s.2p 4P0.5                 
    1   27        -3.2241      6.620e-03      1.061e+12        1s2.2s 2S0.5 -  1s.(2S).2s.2p 4P1.5                 
    1   28        -3.2209      6.669e-06      7.142e+08        1s2.2s 2S0.5 --  1s.(2S).2s.2p 4P2.5                
    1   29        -3.1988      3.691e-01      1.202e+14        1s2.2s 2S0.5 -  1s.(2S).2s.2p 2P0.5                 
    1   30        -3.1961      9.666e-01      1.577e+14        1s2.2s 2S0.5 -  1s.(2S).2s.2p 2P1.5                 
    2   25        -3.2634      8.502e-03      2.661e+12        1s2.2p 2P0.5 -         1s.2s2 2S0.5                 
    2   31        -3.2210      3.368e-03      1.082e+12        1s2.2p 2P0.5 -         1s.2p2 4P0.5                 
    2   32        -3.2182      7.303e-05      1.175e+10        1s2.2p 2P0.5 -         1s.2p2 4P1.5                 
    2   38        -3.1970      5.507e-01      1.796e+14        1s2.2p 2P0.5 -         1s.2p2 2P0.5                 
    2   40        -3.1783      2.860e-02      9.439e+12        1s2.2p 2P0.5 -         1s.2p2 2S0.5                 
    3   25        -3.2678      1.215e-02      3.792e+12        1s2.2p 2P1.5 -         1s.2s2 2S0.5                 
    3   31        -3.2252      1.522e-04      4.877e+10        1s2.2p 2P1.5 -         1s.2p2 4P0.5                 
    3   32        -3.2225      4.753e-03      7.628e+11        1s2.2p 2P1.5 -         1s.2p2 4P1.5                 
    3   33        -3.2197      1.974e-02      2.115e+12        1s2.2p 2P1.5 -         1s.2p2 4P2.5                 
    3   38        -3.2012      1.952e-01      6.349e+13        1s2.2p 2P1.5 -         1s.2p2 2P0.5                 
    3   40        -3.1824      2.153e-01      7.087e+13        1s2.2p 2P1.5 -         1s.2p2 2S0.5                 

%produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
%
% E. Landi - July 1999

ca_18.splups (electron collision data)

contains the spline fits to the electron collision strengths scaled according the rules formulated by Burgess and Tully (1992). Accurate replication of the temperature averaged collision strength over a wide range of temperatures can be accomplished with the data in this file.

 

%filename: ca_18.splups
%oscillator strengths: H.L. Zhang, D.H. Sampson, C.J. Fontes, 1990, ADNDT, 44, 31
%oscillator strengths: Martin, I., Karwowski, J., Diercksen, G.H.F., Barrientos, C., 1993, A&AS, 100, 595
%collision strengths: Zhang, Sampson, Fontes, 1990, ADNDT, 44, 31
%Collision strengths innershell transitions: Goett, S.J., Sampson, D.H., 1983, ADNDT, 29, 535
% produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
%
% E.Landi and K.P.Dere - July 1999

ca_18.splups (proton collisional data) Not available in this VERSION.

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

ca_18_table.html (html table)


Last revised by G. Del Zanna on 4-Sep-2009