Etude expérimentale du pouvoir d'arrêt des ions dans la matière tiède et dense: mesure de la distribution des états de charges d'un faisceau d'ions émergeant de la matière tiède et dense

Maxence Gauthier 1
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LULI - Laboratoire pour l'utilisation des lasers intenses
Abstract : The determination if the ion slowing down process (or stopping power) in warm dense matter is essential especially in the frame of inertial confinement fusion. During my thesis, our interest was driven by the modification of the charge state of ion beam emerging from warm dense matter, this quantity playing a major role in ion stopping power calculation. We took advantage of the properties exhibited by ion beams produced by high intensity short pulse lasers to study during two experiments performed at ELFIE and TITAN facilities, the charge state modification of a carbon and helium ion beams emerging from an aluminum foil isochorically heated by an energetic proton beam. In the first two chapters are presented the major challenges regarding the subject from both a theoretical and experimental point of view. Here are exposed the different simulation tools used during the thesis. The third chapter is devoted to the study of the property of laser-produced ion beams in the scope of our experiments aiming at studying the stopping power. We have studied in particular ion beams generated using lower-than-solid density targets during two experiments: helium gas jet and laser-exploded target. In the last chapter are presented the set-ups and results of the two experiments on the charge state of ion beam emerging from warm dense matter. The data we measured in solid-density cold aluminum are successfully compared with the results already obtained in conventional accelerators.
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https://pastel.archives-ouvertes.fr/pastel-00877875
Contributor : Maxence Gauthier <>
Submitted on : Tuesday, October 29, 2013 - 12:22:28 PM
Last modification on : Thursday, March 21, 2019 - 2:22:46 PM
Long-term archiving on : Thursday, January 30, 2014 - 4:37:12 AM

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  • HAL Id : pastel-00877875, version 1

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Maxence Gauthier. Etude expérimentale du pouvoir d'arrêt des ions dans la matière tiède et dense: mesure de la distribution des états de charges d'un faisceau d'ions émergeant de la matière tiède et dense. Physique des plasmas [physics.plasm-ph]. Ecole Polytechnique X, 2013. Français. ⟨pastel-00877875⟩

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