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- W3119095110 abstract "The dipole oscillator-strength distribution df/depsilon for a single continuum excitation of an atom or molecule is a function of the kinetic energy epsilon of an outgoing electron. The distribution describes many optical phenomena such as absorption, refraction, and reflection; in particular, df/depsilon is equal to the cross section for ionization by a photon with energy epsilon + I, apart from a universal constant, where I is the ionization threshold for the relevant shell. Furthermore, df/depsilon governs the ionization by glancing collisions of fast charged particles. Recent years have seen considerable accumulation of experimental data on df/depsilon. Those data are indeed valuable for many applications in radiation physics, plasma physics, atmospheric physics, and astrophysics. In most of these applications, one needs a comprehensive set of data, i.e., numerical values of df/depsilon over a wide range of epsilon, say, from several eV to many keV; most often, one needs data at all epsilon at which df/depsilon is appreciable. However, it is unrealistic to expect for measurements to cover all the epsilon values. Consequently, one must find a method for systematizing the data so that one can extrapolate or interpolate them dependably. It is from this consideration that we started a series ofmore » studies aimed at answering the question in the title. This is a summary of those studies. 28 references.« less" @default.
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- W3119095110 date "1984-01-01" @default.
- W3119095110 modified "2023-09-26" @default.
- W3119095110 title "What formulas are good for representing dipole and generalized oscillator-strength spectra" @default.
- W3119095110 hasPublicationYear "1984" @default.
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