N I - VERSION 11.0

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

  1. n_1.elvlc (energy levels)

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

     
 
 Theoretical energies:
S.S. Tayal, ApJSS, 2006, 163, 207

Experimental 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/asd [2013, May 3]. National Institute of Standards and Technology, Gaithersburg, MD. 

Corrected typo in experimental energy for level 5 - RP Dufresne, Jan 2024.

Produced for the CHIANTI database v.8 by G. Del Zanna Mar 2014

 -1

  2. n_1.wgfa (radiative data)

    3. 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/asd [2013, May 3]. National Institute of Standards and Technology, Gaithersburg, MD.


A-values from G. Tachiev and C. Froese Fischer, Method: MCHF (energy adjusted), A&ASS, 2002, 385,716


Produced for the CHIANTI database v.9 by Giulio Del Zanna, 2018 Oct 30

Note: the v.8 A-values were incorrect as the 2D 3/2, 5/2 levels were
inverted by mistake.


RPD - lines 153-419 are additional transitions taken from Tachiev and Froese Fischer, A&ASS, 2002, 385,716

%File processed with wgfa_tidy by pryoung on  6-Mar-2019
%File processed with wgfa_tidy by pryoung on 11-Oct-2024

  3. n_1.scups (electron collision data)

    4. 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 G. Del Zanna Mar 2014                    

Effective Collision Strengths and gf-values from S.S. Tayal, ApJSS, 2006, 163, 207

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

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

    n_1_table.html (html table)

    Page created by Giulio Del Zanna on Tue Dec 3 13:24:27 2024