Electron-impact excitation rates of Na-like ions

Details Electron-impact excitation rates of Na-like ions Electron-impact excitation rates of Na-like ions

Oct 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998a%26as..132...99k&link_type=abstract

Astronomy and Astrophysics Supplement, v.132, p.99-105

Astronomy and Astrophysics

Astrophysics

5

Atomic Data

Scientific paper

Electron excitation collision strengths for all the transitions among 3s, 3p, 3d, 4s, 4p, 4d, 4f states of the five Na-like ions Al III, Si IV, S VI, Ar VIII and Ca X are calculated in the R-matrix approximation. Eleven target terms are included in the expansion of the total wavefunction. These collision strengths are averaged over a Maxwellian velocity distribution to obtain effective collision strengths as a function of electron temperature. The resulting values are compared with the results of previous less elaborate calculations to find some disagreements.

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