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INTERACTION MAGNÉTOCHIRALE : ÉTUDE THÉORIQUE ET EXPÉRIENCES DANS LES LASERS.

Abstract : This thesis is devoted to the theoretical and experimental study of magnetochirality. This interaction manifests itself in particular as a shift of the refractive index of a chiral medium in the presence of a longitudinal magnetic field. On the one hand, the dipole-dipole interaction model of optical activity is extended to treat magnetochirality. On the other hand, a multiple beam interferometer, active and ring-shaped, has been built to measure it. For chosen compounds, limonene, proline and tartrates, the experimental values obtained using this laser interferometer are in the 10-10-10-11/T range. They are in agreement with the model. The first attempts to orient crystallizations using the magnetochiral interaction, in particular in Pasteur's tartrates, are presented. Eventually, by studying mixtures, it is shown that the magnetism of solutions allows us to control both the amplitude and sign of the interaction. Use of ferrofluids is then suggested to enhance magnetochirality.
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Contributor : Thierry Ruchon <>
Submitted on : Monday, December 6, 2010 - 2:52:41 PM
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  • HAL Id : tel-00541349, version 1

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Thierry Ruchon. INTERACTION MAGNÉTOCHIRALE : ÉTUDE THÉORIQUE ET EXPÉRIENCES DANS LES LASERS.. Physique Atomique [physics.atom-ph]. Université Rennes 1, 2005. Français. ⟨tel-00541349⟩

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