Oscillator strengths and collision strengths for S II
Abstract
Calculations are presented of the collision strengths for electron impact excitation of S II from the ground 3s(2)3p(3)(4)S0 state to excited states 3s3p(4)(4)p, 3s(2(3p(2)4s(4)P, and 3s(2)3p(2)3d(4)P. The collision strengths are calculated in a closecoupling approximate ion for the energy range up to 10 to the 6th K. In addition, oscillator strengths are given for these transitions, as well as for some UV lines which have lower states 3s(2)3p(3)(2)D(O) and 3s(2)3p(3)(2)P(0). The calculation of the collision strengths involves the use of configuration interaction target wave functions which give oscillator strengths accurate to 30 percent in most cases.
 Publication:

The Astrophysical Journal
 Pub Date:
 April 1983
 DOI:
 10.1086/160923
 Bibcode:
 1983ApJ...267..886H
 Keywords:

 Atomic Collisions;
 Atomic Excitations;
 Atomic Spectra;
 Io;
 Oscillator Strengths;
 Space Plasmas;
 Sulfur;
 Transition Probabilities;
 Atomic Energy Levels;
 Configuration Interaction;
 Electron Impact;
 Electron Orbitals;
 Hartree Approximation;
 Plasma Spectra;
 Ultraviolet Spectra;
 Wave Functions;
 Lunar and Planetary Exploration