Mg I - VERSION 11.0.1

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

mg_1.elvlc (energy levels)

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

 

Experimental energies from: Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2023).
  NIST Atomic Spectra Database (ver. 5.11), [Online]. Available: https://physics.nist.gov/asd [2024, January 15].
  National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F

Theoretical data from: Froese Fischer C., Tachiev G. I., Irimia A., 2006, ADNDT, 92, 607–812,
  DOI:10.1016/j.adt.2006.03.001 (ab initio data)

Prepared for the CHIANTI database by R.P. Dufresne on Jan 17 2024.

-1

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.

 
   
Transition data from: Froese Fischer C., Tachiev G. I., Irimia A., 2006, ADNDT, 92, 607–812,
  DOI:10.1016/j.adt.2006.03.001 (ab initio data)

Prepared for the CHIANTI database by R.P. Dufresne on Jan 17 2024.

%File processed with wgfa_tidy by pryoung on 15-Oct-2024

mg_1.scups (electron collision data)

contains the effective electron collision strengths scaled according to the rules formulated by Burgess and Tully (1992).

 

Prepared for the CHIANTI database by R.P. Dufresne on Feb 27 2024.                                                                                  

  should not be used for spectroscopic diagnostics.                                                                                                 
  The data is produced for calculating effective ionisation and recombination rates for the advanced models only and                                
  Burgess-Tully limit points were derived by extrapolating using last three points, which were very close to the limit.                             
  for each level in LSJ-coupling to the total for the term, and splitting the R-Matrix collision strengths by these ratios.                         
Original data is in LS-coupling; the intermediate-coupling values are derived by using the ratio of Autostructure distorted wave collision strengths
                                                                                                                                                    
  2017, A&A, 606, A11, DOI: 10.1051/0004-6361/201730864 (B-spline R-Matrix data provided by K. Bartschat)                                           
Theoretical data from: Barklem P.S., Osorio Y., Fursa D. V., Bray I., Zatsarinny O., Bartschat K., Jerkstrand A.,

(proton collisional data) Not available in this VERSION.

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

mg_1_table.html (html table)