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

al_11d.elvlc (energy levels)

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

 
%observed energy levels (1 - 24): Martin, W.C., Zalubas, R., 1979, J.Phys.Chem.Ref.Data, 8, 817
%theoretical energy levels (1 - 24): Zhang, H.L., Sampson, D.H., Fontes, C.J., 1990, ADNDT, 44, 31
%energy levels (above IP): Vainshtein, L.A., Safronova, U.I., 1978, ADNDT, 21, 49
   and 1980, ADNDT, 25, 311 - updated by U.I. Safronova, 1999
%produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
%
% Ken Dere - Feb 2002
 

al_11d.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.

 
%filename: al_11d.wgfa
%observed energy levels: Martin, W.C., Zalubas, R.,1979, J.Phys.Chem.Ref.Data, 8, 817
%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
%A values (autoionizing): Vainshtein, L.A., Safronova, U.I., 1978, ADNDT, 21, 49
   and 1980, ADNDT, 25, 311 - updated by U.I. Safronova, 1999
%A values (above IP): Vainshtein, L.A., Safronova, U.I., 1978, ADNDT, 21, 49
   and 1980, ADNDT, 25, 311 - updated by U.I. Safronova, 1999
%comment: theoretical energies have been used as experimental values for the dielectronic transitions
%produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
% 
% Ken Dere - Feb 2002

al_11d.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: al_11d.splups
%collision strengths: from updated autoionization rates of Vainshtein, L.A., Safronova, U.I., 1978, ADNDT, 21, 49
   and 1980, ADNDT, 25, 311 - updated by U.I. Safronova, 1999
%produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
%
% Ken Dere - Feb 2002

---

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

al_11d_table.html (html table)


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