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

ca_7.elvlc (energy levels)

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

 
%observed 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
%observed energy level 18: Kelly, R.L., 1987, J.Phys.Chem.Ref.Data, 16, Suppl.1
%Theoretical energy levels: Landi & Bhatia, 2003, ApJ, 589, 1075
%Comment: Theoretical energies are taken from the 25-configuration model of Landi & Bhatia 2003.
%produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data collaboration
% 
% E. Landi - Dec 2002
 

ca_7.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: 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
%observed energy level 18: Kelly, R.L., 1987, J.Phys.Chem.Ref.Data, 16, Suppl.1
%Theoretical energy levels: Landi & Bhatia, 2003, ApJ, 589, 1075
% Oscillator strengths and A values: Landi & Bhatia, 2003, ApJ, 589, 1075
%Comment: theoretical energies, osc. strengths and A values are taken from the 25-configuration model of Landi & Bhatia 2003.
%produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data collaboration
% 
% E. Landi - Dec 2002

ca_7.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_7.splups
%oscillator strengths: Landi & Bhatia 2003, ApJ, 589, 1075
%collision strengths: Landi & Bhatia 2003, ApJ, 589, 1075
%comment: oscillator strengths are from the 5-configuration models in Landi & Bhatia 2003,
   for consistency with the atomic model in the collision problem
% produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
%
% Enrico Landi - Dec 2002

ca_7.splups (proton collisional data) Not available in this VERSION.

---

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

ca_7_table.html (html table)


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