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The CHIANTI database consists of the following primary ASCII files for this ion:
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.
%Innershell observed energy levels: Kelly,R.L., 1987, J.Phys.Chem.Ref.Data, 16, Suppl. 1.
%Innershell theoretical energy levels: Interpolated through the isoelectronic sequence using
O VI, Ne VIII, Mg X, Si XII, S XIV, Ca XVIII, Fe XXIV, Ni XXVI
%produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
%
& E.Landi and K.P.Dere 1999
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.
%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: 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 energy levels: Kelly,R.L., 1987, J.Phys.Chem.Ref.Data, 16, Suppl. 1.
%Innershell theoretical energy levels: Interpolated through the isoelectronic sequence using
O VI, Ne VIII, Mg X, Si XII, S XIV, Ca XVIII, Fe XXIV, Ni XXVI
%Oscillator strengths innershell transitions: Interpolated through the isoelectronic sequence using
O VI, Ne VIII, Mg X, Si XII, S XIV, Ca XVIII, Fe XXIV, Ni XXVI
%A values (autoionizing): Vainshtein, L.A., Safronova, U.I., 1978, ADNDT, 21, 49-68.
and 1980, ADNDT, 25, 311 - updated by U.I. Safronova, 1999
% comment: unidentified lines
1 26 -7.9477 8.616e-05 4.547e+09 1s2.2s 2 S0.5 1s.2s.2p 4 P0.5
1 27 -7.9462 4.539e-04 1.198e+10 1s2.2s 2 S0.5 1s.2s.2p 4 P1.5
1 28 -7.9426 0.000e+00 1.922e+07 1s2.2s 2 S0.5 1s.2s.2p 4 P2.5
2 25 -8.0888 7.669e-03 3.907e+11 1s2.2p 2 P0.5 1s.2s2 2 S0.5
2 31 -7.9310 1.549e-04 8.209e+09 1s2.2p 2 P0.5 1s.2p2 4 P0.5
2 32 -7.9280 6.198e-05 1.644e+09 1s2.2p 2 P0.5 1s.2p2 4 P1.5
2 38 -7.8393 4.940e-01 2.680e+13 1s2.2p 2 P0.5 1s.2p2 2 P0.5
3 25 -8.0926 1.398e-02 7.116e+11 1s2.2p 2 P1.5 1s.2s2 2 S0.5
3 31 -7.9347 2.537e-05 1.343e+09 1s2.2p 2 P1.5 1s.2p2 4 P0.5
3 32 -7.9316 3.873e-04 1.026e+10 1s2.2p 2 P1.5 1s.2p2 4 P1.5
3 33 -7.9281 1.145e-03 2.024e+10 1s2.2p 2 P1.5 1s.2p2 4 P2.5
%
%produced as part of the Arcetri/Cambridge/NRL atomic data base collaboration CHIANTI
%
% E. Landi and K.P.Dere 1999
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_11.splups %collision strengths: Zhang, Sampson, Fontes, 1990, ADNDT, 44, 31 %effective collision strengths innershell transitions: interpolated from Goett, S.J., Sampson, D.H., 1983, ADNDT, 29, 535 %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 %Oscillator strengths innershell transitions: Interpolated through the isoelectronic sequence using % comment: ions used for the interpolation are: O VI Ne VIII, Mg X, Si XII, S XIV, Ca XVIII, Fe XXIV, Ni XXVI %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration % % K.P.Dere and Enrico Landi 1999