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Microscopie de Photoïonisation : une étude classique, semi-classique et quantique

Abstract : Photoionization microscopy is a technique that allows obtaining a macroscopic image of an electronic wave function which is usually confined into an atom. The experiment consists in ionizing an atom just above the threshold in a static electric field. The classical study of the movement of an electron in a combined coulombian and electric field shows that a infinite number of trajectories lead to a single point. In a quantum point of view, the partial wave functions which follow these trajectories interfere, and this phenomena is visualized on a position sensitive detector. This thesis proposes a classical, semiclassical and quantum study of photoionization microscopy. Our simulations of wave packet propagation use a Slit-Operator algorithm, and we propose a systematic study of Hydrogen. We show that it is possible to visualize by photoionization microscopy resonant Stark state in the continuum of Hydrogen, where the dark fringes of the interferences are linked with the nodes of the wave function. Furthermore, we describe the effect of the electonic core of non hydrogenic atoms on the microscopy of these states.
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https://tel.archives-ouvertes.fr/tel-00250373
Contributor : Antoine Ollagnier <>
Submitted on : Monday, February 11, 2008 - 7:10:23 PM
Last modification on : Friday, October 23, 2020 - 4:52:17 PM
Long-term archiving on: : Monday, May 17, 2010 - 4:36:16 PM

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  • HAL Id : tel-00250373, version 1

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Antoine Ollagnier. Microscopie de Photoïonisation : une étude classique, semi-classique et quantique. Physique Atomique [physics.atom-ph]. Université Claude Bernard - Lyon I, 2007. Français. ⟨tel-00250373⟩

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