Ni XVIII - VERSION 11.0

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

ni_18.elvlc (energy levels)

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

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
%File processed with wgfa_tidy by pryoung on 31-May-2023

ni_18.scups (electron collision data)

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:

(proton collisional data) Not available in this VERSION.

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

ni_18_table.html (html table)