Computer Science – Numerical Analysis
Scientific paper
Mar 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975mnras.170..475s&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 170, Mar. 1975, p. 475-486.
Computer Science
Numerical Analysis
227
Collision Parameters, Electron Impact, Forbidden Bands, Ionic Collisions, Molecular Excitation, Nitrogen Ions, Oxygen Ions, Collision Rates, Electron Density (Concentration), Electron Energy, Numerical Analysis, Spectral Energy Distribution, Spectral Line Width, Wave Functions
Scientific paper
The results of some recent collision strength calculations are given in a form convenient for the interpretation of observations. The calculations are estimated to be accurate within 10 percent based on: (1) comparison of observed and calculated energies for the bound states of the (electron + ion) systems. Semi-empirical corrections are made for forbidden Ne II; (2) comparisons of calculated positions obtained from iso-electronic sequence extrapolations. This of particular importance for forbidden O III; and (3) the convergence of the expansions used for the wave functions, in particular for forbidden N II and Ne III, where inclusion of additional states produces only small changes in the near-threshold results.
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