Matches in SemOpenAlex for { <https://semopenalex.org/work/W1808284429> ?p ?o ?g. }
- W1808284429 endingPage "194" @default.
- W1808284429 startingPage "163" @default.
- W1808284429 abstract "The model-potential method is used widely in calculations of both bound-state and continuum state properties of both atomic and molecular systems. Model-potential energies of high accuracy for two-electron systems can be obtained though not of as high accuracy as very refined ab initio calculations for small systems. Model-potential methods have the advantage that the computations are relatively straight-forward and inexpensive, even for large systems, and they allow accurate predictions for Rydberg levels. The model-potential approach can provide estimates of the positions and widths of doubly-excited autoionizing resonances. Oscillator strengths or, equivalently, transition probabilities, have many important applications, for example, in deducing relative abundances in plasmas from the observed emission. Transition probabilities may be combined to give a radiative lifetime for an excited state. Use of the unmodified dipole operator gives good agreement with experiment near threshold but seriously underestimates the cross section above the minimum. Introducing the core-polarization correction to the dipole matrix element lowers the cross section at threshold but leads to a substantial increase above the minimum." @default.
- W1808284429 created "2016-06-24" @default.
- W1808284429 creator A5012164896 @default.
- W1808284429 creator A5078928917 @default.
- W1808284429 date "1989-01-01" @default.
- W1808284429 modified "2023-10-18" @default.
- W1808284429 title "Model-Potential Methods" @default.
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