Al II - VERSION 11.0

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

al_2.elvlc (energy levels)

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

 
 
Theoretical energies:
Fernandez-Menchero, L., Del Zanna, G. and Badnell, N.R.
A&A, 2014, 572, A115
doi = {10.1051/0004-6361/201424849

Note: only  bound levels have been retained.

Observed energies: NIST Atomic Spectra Database, (ver. 5.7.1), [Online].
https://physics.nist.gov/PhysRefData/ASD/levels_form.html
Note: several NIST energies are uncertain.


Produced as part of the 'CHIANTI' atomic data base collaboration by
Giulio Del Zanna, May 2020


 -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.

 
gf-values, A-values and theoretical energies:
Fernandez-Menchero, L., Del Zanna, G. and Badnell, N.R.
A&A, 2014, 572, A115
doi = {10.1051/0004-6361/201424849

Only transition probabilities with a branching ratio
greater than 10^(-5) have been retained.

Note: only  bound levels have been retained.

Observed energies: NIST Atomic Spectra Database, (ver. 5.7.1), [Online]
https://physics.nist.gov/PhysRefData/ASD/levels_form.html
Note: several NIST energies are uncertain.


Produced as part of the 'CHIANTI' atomic data base collaboration by
Giulio Del Zanna, May 2020


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

al_2.scups (electron collision data)

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

 

Giulio Del Zanna, May 2020                                         
Produced as part of the 'CHIANTI' atomic data base collaboration by

Note: only  bound levels have been retained.                       

doi = {10.1051/0004-6361/201424849                                 
A&A, 2014, 572, A115                                               
Fernandez-Menchero, L., Del Zanna, G. and Badnell, N.R.            

oscillator strengths and effective collision strengths:

(proton collisional data) Not available in this VERSION.

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

al_2_table.html (html table)