Heliumlike ion line intensities. IV - Z-dependence of collision strengths for N = 2 - N = 1 transitions in helium- and hydrogenlike ions

Details Heliumlike ion line intensities. IV - Z-dependence of collision strengths for N = 2 - N = 1 transitions in helium- and hydrogenlike ions Heliumlike ion line intensities. IV - Z-dependence of collision strengths for N = 2 - N = 1 transitions in helium- and hydrogenlike ions

Jul 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....87...55m&link_type=abstract

Astronomy and Astrophysics, vol. 87, no. 1-2, July 1980, p. 55-57.

Astronomy and Astrophysics

Astrophysics

32

Collisional Plasmas, Helium Ions, Helium Plasma, Plasma Spectra, Electron Impact, Electron Transitions, Electron-Ion Recombination, Ionized Gases, Line Spectra, Semiempirical Equations, X Ray Spectroscopy

Scientific paper

In earlier work a semi-empirical fit to the electron-excitation
collision strengths was obtained for the n = 1 to n = 2 transitions in
H- and He-like ions of nuclear charge Z ≳ 14. This work is here
extended to incorporate the effects of scaling with Z by a comparison
with more recent theoretical data for low Z.

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