Ni XXI - VERSION 8.0


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

  1. ni_21.elvlc (energy levels)
  2. contains the energy levels (in cm-1). It includes both experimental and theoretical values of the levels energies.

     
    %filename: ni_21.elvlc
    %observed energy levels (n=2,3 levels): Shirai,J., Musgrove,A., Wiese,W.L.,2000, J.Phys.Chem.Ref.Data, Monograph 8
    %theoretical energy levels (n=2,3 levels): Bhatia, A.K., Landi, E., unpublished SUPERSTRUCTURE calculation
    %Comment: The SUPERSTRUCTURE calculation included 24 configurations:
                      2s2.2p4, 2s.2p5, 2p6
                      2s2.2p3.3l, 2s.2p4.3l, 2p5.3l     (l=s,p,d)
                      2s2.2p3.4l, 2s.2p4.4l, 2p5.4l     (l=s,p,d,f)
    %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
    % 
    % E. Landi - May 2003
     
    

  3. ni_21.wgfa (radiative data)
  4. 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_21.wgfa
    %observed energy levels (n=2,3 levels): Shirai,J., Musgrove,A., Wiese,W.L.,2000, J.Phys.Chem.Ref.Data, Monograph 8
    %theoretical energy levels (n=2,3 levels): Bhatia, A.K., Landi, E., unpublished SUPERSTRUCTURE calculation
    %A values and oscillator strengths: Bhatia, A.K., Landi, E., unpublished SUPERSTRUCTURE calculation
    %Comment: The SUPERSTRUCTURE calculation included 24 configurations:
                      2s2.2p4, 2s.2p5, 2p6
                      2s2.2p3.3l, 2s.2p4.3l, 2p5.3l     (l=s,p,d)
                      2s2.2p3.4l, 2s.2p4.4l, 2p5.4l     (l=s,p,d,f)
    %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
    % 
    % E. Landi - May 2003
    

  5. ni_21.scups (electron collision data)
  6. contains the effective electron collision strengths scaled according to the rules formulated by Burgess and Tully (1992).

     
    %filename: ni_21.splups
    %Oscillator strengths: Bhatia, A.K., Landi, E., Mason, H.E. 2003, ADNDT, 83, 71
    %Collision strengths: Bhatia, A.K., Landi, E., Mason, H.E. 2003, ADNDT, 83, 71
    %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
    %
    % E. Landi 2001
    
    

  7. ni_21.psplups (proton collision data)
  8. contains the spline fits to the scaled proton collision strengths.

     
    
    %filename: ni_21.psplups
    %rates: Feldman, U., Doschek, G.A., Cheng, C.C., Bhatia, A.K., 1980, J. Applied Phys., 51, 190
    %energies: Observed energies from CHIANTI .elvlc file
    %comment: Fitted using single_temp.pro with scalx=0.90
    %produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
    %  
    % Peter Young  12-Mar-02
    


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

    ni_21_table.html (html table)

    Page created by Giulio Del Zanna on Fri Sep 18 13:29:17 2015