Ni XVIII - VERSION 10.0.2


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

  1. ni_18.elvlc (energy levels)
  2. contains the energy levels (in cm-1). It includes both experimental and theoretical values of the levels energies.

     
    %filename:  ni_18.elvlc
     
    Observed energies: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2012). 
    NIST Atomic Spectra Database (ver. 5.0), [Online]. Available: http://physics.nist.gov/
    
    Theoretical energies:
    outer shell: Liang, G. Y., Whiteford, A. D., & Badnell, N. R. 2009, A&A, 500, 1263
       doi = {10.1051/0004-6361/200911866}
       adsurl = {http://adsabs.harvard.edu/abs/2009A%26A...500.1263L}
       
    inner shell: Liang, G. Y., Whiteford, A. D., & Badnell, N. R. 2009, Journal of Physics B
    Atomic Molecular Physics, 42, 225002
        doi = {10.1088/0953-4075/42/22/225002}
       adsurl = {http://adsabs.harvard.edu/abs/2009JPhB...42v5002L}
    
    
    Produced for the CHIANTI database v.8 by Giulio Del Zanna  Nov 2013
     
    

  3. ni_18.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_18.wgfa
    
    Observed energies: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2012). 
    NIST Atomic Spectra Database (ver. 5.0), [Online]. Available: http://physics.nist.gov/
    
    Theoretical energies, gf and A-values: 
    outer shell: Liang, G. Y., Whiteford, A. D., & Badnell, N. R. 2009, A&A, 500, 1263
       doi = {10.1051/0004-6361/200911866}
       adsurl = {http://adsabs.harvard.edu/abs/2009A%26A...500.1263L}
       
    inner shell: Liang, G. Y., Whiteford, A. D., & Badnell, N. R. 2009, Journal of Physics B
    Atomic Molecular Physics, 42, 225002
        doi = {10.1088/0953-4075/42/22/225002}
       adsurl = {http://adsabs.harvard.edu/abs/2009JPhB...42v5002L}
    
     Note: only transitions with a branching ratio of 10^-5 have been retained.
     
     
    The autoionization rates have been calculated using AUTOSTRUCTURE v.24.24 and 
    the same set of scaling parameters used by Liang et al. 
    
    
    Produced for the CHIANTI database v.8 by Giulio Del Zanna 20 Jan 2015
    
    v.8 autoionization values move to ni_18.auto - K Dere 2017 Dec 17
    %File processed with wgfa_tidy by pryoung on  6-Mar-2019
    

  5. ni_18.scups (electron collision data)
  6. contains the effective electron collision strengths scaled according to the rules formulated by Burgess and Tully (1992).

     
    
    
    Produced for the CHIANTI database v.8 by Giulio Del Zanna  Nov 2013
          
    
       adsurl = {http://adsabs.harvard.edu/abs/2009JPhB...42v5002L}
        doi = {10.1088/0953-4075/42/22/225002}
    Atomic Molecular Physics, 42, 225002
    inner shell: Liang, G. Y., Whiteford, A. D., & Badnell, N. R. 2009, Journal of Physics B
       
       adsurl = {http://adsabs.harvard.edu/abs/2009A%26A...500.1263L}
       doi = {10.1051/0004-6361/200911866}
    outer shell: Liang, G. Y., Whiteford, A. D., & Badnell, N. R. 2009, A&A, 500, 1263
    Data from:
    
    

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

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

    ni_18_table.html (html table)

    Page created by Giulio Del Zanna on Wed Jun 8 16:10:53 2022