Fully differential cross-section measurements for electron-impact ionization of neon and xenon
Date
2009
Authors
Stevenson, M
Hargreaves, L.R.
Lohmann, Birgit
Bray, Igor
Fursa, Dmitry V.
Bartschat, Klaus R
Kheifets, Anatoli
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American Physical Society
Abstract
We present a combined experimental and theoretical investigation of the fully differential cross section for electron-impact ionization of neon and xenon. The experiments were performed under coplanar asymmetric kinematics, at intermediate incident electron energies, and for a range of scattered electron detection angles. The experimental results are compared with three calculations: a convergent close-coupling calculation, a distorted-wave Born approximation (DWBA) calculation with inclusion of the Gamow factor, and a hybrid DWBA+R -matrix calculation. The comparison between the experimental and theoretical results highlights the importance of the description of postcollision interaction, and the results exhibit interesting orbital-dependent differences.
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Keywords: Approximation theory; Born approximation; Electron scattering; Electrons; Inert gases; Ionization; Neon; Xenon; Convergent close-coupling calculations; Distorted waves; Electron-impact ionizations; Fully differential cross sections; Fully differentials; I
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Physical Review A: Atomic, Molecular and Optical Physics
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Journal article
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2037-12-31
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