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

ni_13.elvlc (energy levels)

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

 
%Experimental energy levels: Martin, W. C., Sugar, J., Musgrove, A., and Dalton, G. R., 1995,
   NIST Database for Atomic Spectroscopy, Version 1.0, NIST Standard Reference Database 61.
%Theoretical energy levels: Bhatia and Doschek, 1998, ADNDT, 68, 49
%Comment: the energy of the (2D)1P (39) level listed by NIST and Kelly 1987 has been assigned
         to the (2P)1P (47) level following Fawcett 1986, ADNDT, 35, 185, because there is a
         better agreement with the theoretical energy (also in line with the rest of the configuration)
         and with the wavelengths by Kelly and NIST.
% produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
%
%  E. Landi 2000
 

ni_13.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.

 
%Experimental energy levels: Martin, W.C., Sugar, J., Musgrove, A., Dalton, G.R., 1995, 
    NIST Database for Atomic Spectroscopy, Version 1.0, NIST Standard Reference Database 61.
%Theoretical energy levels: Bhatia and Doscheck, 1998, ADNDT, 68, 49
%radiative transition probabilities: Bhatia and Doscheck, 1998, ADNDT, 68, 49
% produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration CHIANTI
%
% E.Landi 1998

ni_13.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: ni_13.splups
%oscillator strengths: Bhatia & Doscheck, 1998, ADNDT, 68, 49
%collision strengths: Bhatia & Doscheck, 1998, ADNDT, 68, 49
%comment: added collision strengths for transitions involving levels 14,21,23,24,25. Level
          populations are affected at densities higher than 10^9 cm^-3 (Jun 2003).
%produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
%
% E.Landi - June 2003

ni_13.psplups (proton collision data)

contains the spline fits to the scaled proton collision strengths.

 

%file: ni_13.psplups
%rates: Landman, D.A., ApJ 240, 709, 1980
%energies: Observed energies from CHIANTI .elvlc file
%produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
%
% Peter Young   25-Sep-2001

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

ni_13_table.html (html table)


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