CHIANTI

An Atomic Database for Spectroscopic Diagnostics of Astrophysical Plasmas.

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Naval Research Laboratory (USA) - Rutherford Appleton Laboratory (UK)
University of Cambridge (UK) - George Mason University (USA) - Universita' degli Studi di Firenze (Italy)

Mg V - VERSION 4.2

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

  1. mg_5.elvlc (energy levels)

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

     
%observed energy levels:  Martin, W.C., Sugar, J., Musgrove, A., Dalton, G.R., 1995, 
    NIST Database for Atomic Spectroscopy, Version 1.0, NIST Standard Reference Database 61.
%theoretical energy levels: Bhatia A.K. (private communications)
%produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
%
% E.Landi 1995

  2. mg_5.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 energy levels: Martin, W.C., Sugar, J., Musgrove, A., Dalton, G.R., 1995, 
  NIST Database for Atomic Spectroscopy, Version 1.0, NIST Standard Reference Database 61
%oscillator strengths: Bhatia A.K. (private communication)
%A-values (2-4 and 1-4 transitions): Storey PJ, Zeippen CJ, MNRAS 312, 813, 2000
% produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
%
%  Enrico Landi and Peter Young, Aug 2000

  3. mg_5.splups (electron collision data)

    4. contains the spline fits to the electron collision strengths scaled according the rules formulated by Burgess and Tully (1992). Accurate replication of the temperature averaged collision strength over a wide range of temperatures can be accomplished with the data in this file. 

     

%filename: mg_5.splups
%oscillator strengths: Bhatia A.K. (private communications)
%effective collision strengths ground configuration T<10^6 :Butler, K., Zeippen, C.J., 1994, A&ASS, 108, 1
%effective collision strengths ground configuration T>10^6 : Bhatia A.K. (private communications)
%all other transitions: collision strengths from Bhatia A.K. (private communications)
%comment: ground configuration effective collision strengths for T>10^6 have been obtained from the
      collision strengths of the file .omdat .
% produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
% 
% E. Landi 1996

  4. mg_5.psplups (proton collision data)

    5. contains the spline fits to the scaled proton collision strengths. 

     

%filename: mg_5.psplups
%rates: Ryans R.S.I., Keenan F.P., Reid R.H.G., unpublished.
%energies: Observed values, from .elvlc file
%comment: Fits valid for temperatures 8e4 to 4e6 K.
%produced as part of the Arcetri/Cambridge/NRL 'CHIANTI' atomic data base collaboration
%
% Peter Young   15-May-2001

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

    mg_5_table.html (html table)


    Last revised by G. Del Zanna on 4-Sep-2009