Ni II - VERSION 11.0.1

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

ni_2.elvlc (energy levels)

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

 
%filename:  ni_2.elvlc
%Observed energies: Ver. 3 of the NIST Atomic Database
%Theoretical energies: none provided by Bautista (2004) so observed energies used.
%Comment: The energies given to levels 11 and 12 by Bautista are reversed compared
   to those in NIST. The NIST values are used here.
   Bautista did not give the parent terms for the Ni II levels. These
   have been derived from the energy level compilation at NIST.
% produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
%
%   P.R. Young, Feb-2009

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: ni_2.wgfa
%Observed energies: Ver. 3 of the NIST Atomic Database
%A-values: Quinet & Le Dourneuf, 1996, A&AS, 119, 99
%A-values: Nussbaumer, H., & Storey, P.J., 1982, A&A, 110, 295
%Comment: Nussbaumer & Storey data were used for transitions 1-2, 3-4, 
   1-5, 1-6, 12-11, 9-17 and 13-17. For all other transitions Quinet & Le Dourneuf were used.
% produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
%
%   P.R. Young, Feb-2009
%File processed with wgfa_tidy by pryoung on  6-Mar-2019
%File processed with wgfa_tidy by pryoung on 31-May-2023

ni_2.scups (electron collision data)

contains the effective electron collision strengths scaled according to the rules formulated by Burgess and Tully (1992).

 
%   P.R. Young, Feb-2009                                                                                    
%                                                                                                           
% produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration                    
     over the temperature range 2000-30,000 K                                                               
%Comment: The spline fits reproduce the original upsilons to 0.60% or better                                
%Theoretical energy levels: none provided by Bautista (2004) so observed energies from .elvlc file were used
%Effective collision strengths: Bautista, M., 2004, A&A, 420, 763                                           
%filename: ni_2.splups

(proton collisional data) Not available in this VERSION.

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

ni_2_table.html (html table)