Ni XVII - VERSION 10.0.2


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

  1. ni_17.elvlc (energy levels)
  2. contains the energy levels (in cm-1). It includes both experimental and theoretical values of the levels energies.

     
     
     Theoretical energies:
    Fernandez-Menchero, L., Del Zanna, G. and Badnell, N.R.
    A&A, 2014, 572, A115
    doi = {10.1051/0004-6361/201424849
    
    Observed energy levels (45,53,78,81,86): Fawcett, B.C., Cowan, R.D., Hayes, R.W., 1972, J. Phys. B, 5, 2143
    Observed energy levels (36,41-44,50-52,118-121,130-133): Feldman, U., Katz, L., Behring, W., Cohen, L. 1971, J.Opt.Soc.Am., 61, 91
    Observed energy levels (37): Acton et al. 1985, ApJ, 291, 865
    
    Other observed energies: NIST Atomic Spectra Database, (ver. 5.7.1), [Online].
    https://physics.nist.gov/PhysRefData/ASD/levels_form.html
    
    
    Produced as part of the 'CHIANTI' atomic data base collaboration by
    Giulio Del Zanna, May 2020
    
    
    
     -1
     
    

  3. ni_17.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.

     
    
    gf-values, A-values and theoretical energies:
    Fernandez-Menchero, L., Del Zanna, G. and Badnell, N.R.
    A&A, 2014, 572, A115
    doi = {10.1051/0004-6361/201424849
    
    Only transition probabilities with a branching ratio
    greater than 10^(-5) have been retained.
    
    gf-values, A-values for the n=3 (lowest 26 levels):
    MCHF calculation by
    G. Tachiev and C. Froese Fischer, Method: MCHF (ab initio), 2002
    https://nlte.nist.gov/MCHF/periodic.html
    
    
     Observed energy levels (45,53,78,81,86): Fawcett, B.C., Cowan, R.D., Hayes, R.W., 1972, J. Phys. B, 5, 2143
    Observed energy levels (36,41-44,50-52,118-121,130-133): Feldman, U., Katz, L., Behring, W., Cohen, L. 1971, J.Opt.Soc.Am., 61, 91
    Observed energy levels (37): Acton et al. 1985, ApJ, 291, 865
    
    Other observed energies: NIST Atomic Spectra Database, (ver. 5.7.1), [Online].
    https://physics.nist.gov/PhysRefData/ASD/levels_form.html
    
    
    Produced as part of the 'CHIANTI' atomic data base collaboration by
    Giulio Del Zanna, May 2020
    
    

  5. ni_17.scups (electron collision data)
  6. contains the effective electron collision strengths scaled according to the rules formulated by Burgess and Tully (1992).

     
    
    Giulio Del Zanna, May 2020
    Produced as part of the 'CHIANTI' atomic data base collaboration by
    
    doi = {10.1051/0004-6361/201424849
    A&A, 2014, 572, A115
    Fernandez-Menchero, L., Del Zanna, G. and Badnell, N.R.
    
    oscillator strengths and effective collision strengths:
    
    

  7. (proton collisional data) Not available in this VERSION.

  8. The html tables below contain the radiative data of the brightest lines sorted in wavelength

    Page created by Giulio Del Zanna on Wed Jun 8 16:10:11 2022