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

n_3.elvlc (energy levels)

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

 
%energy levels (n=2): Edlen, B., 1983, 28, 483
%energy levels (n=3): Kelly,R.L., 1987, J.Phys.Chem.Ref.Data 16, Suppl. 1.
%Theoretical energy levels: Zhang,H.L., Graziani,M., Pradhan,A.K., 1994, A&A, 283, 319.
%theoretical energy levels (N III):  Stafford,R.P., Bell,K.L., Hibbert,A., 1992, J. Phys. B, 25, 5449.
%comment:  energy levels renumbered
%produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
%
% E.Landi 1999
 

n_3.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 (n=2): Edlen, B., 1983, 28, 483
%observed energy levels (n=3): Kelly,R.L., 1987, J.Phys.Chem.Ref.Data 16, Suppl. 1.
%comment:  energy levels renumbered
%oscillator strengths: Stafford, R.P., Hibbert, A., Bell, K.L., 1993, MNRAS, 260, L11.
%A values (1-2): Nussbaumer H., Storey, 1979, A&A, 71, L5.
%produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
%
% E. Landi 1999

n_3.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: n_3.splups
%oscillator strengths: Stafford, R.P., Hibbert, A., Bell, K.L., 1993, MNRAS, 260, L11
%effective collision strengths: Stafford, R.P., Bell, K.L., Hibbert, A., 1994, MNRAS, 266, 715
%comment: effective collision strengths were provided in the temperature range 4.0 < Log T < 5.2
%produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
%
% K.P. Dere 1994

n_3.psplups (proton collision data)

contains the spline fits to the scaled proton collision strengths.

 

%filename: n_3.psplups
%rates: Foster VJ, Keenan FP, Reid RHG, ADNDT 67, 99, 1997
%energies: From .elvlc file, experimental energies
%comment: The rate coefficients are in units cm^3/s.
%comment: Fits valid for temperatures 8e3 to 1e5 K.
%produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
%
% Peter Young   15-May-2001

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

n_3_table.html (html table)


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