Generalized Oscillator Strengths forTransition in Cu: Comparison of Experiment and Theory
- 18 November 1985
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 55 (21) , 2277-2280
- https://doi.org/10.1103/physrevlett.55.2277
Abstract
Generalized oscillator strengths are calculated from four-state close-coupling-approximation differential cross sections for the transition in Cu by electron impact at 10, 20, and 60 eV. They neither converge to a universal curve at small momentum transfer squared, , nor extrapolate readily and unambiguously to the optical value at . Favorable agreement is obtained with those deduced from the measurements by Trajmar et al. at 20 and 60 eV after an energy-independent normalization factor of 0.36 has been applied to the data.
Keywords
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