Ni XVIII - VERSION 8.0


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.

     
     
     
    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
    
     -1
     
    

  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.

     
    
    
    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
    
     
    

  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).

     
    
    Data from:
    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
    
    
    
    

  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 Fri Sep 18 13:29:14 2015