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Géneration de rayonnement X par interaction laser-écoulement de poudre

Abstract : Fast development of brief lasers has permitted important progresses in the study of matter irradiated by an intense pulse. Brief X-ray generation, observed in this type of interaction, is interesting for imaging. Thanks to the short X-rays wavelength (0,1 to 100 Å), matter can be probe with resolution of the order of interatomic distance, allowing a direct information about the atomic structure. The brief duration allows to probe the dynamic of ultrafast phenomena.
We have studied the interaction of an intense and brief laser with a flow of powder. This work points out some advantages of this new target concept compared to conventionnal ones. Moreover, it gives a deeper insight about the interaction of a brief and powerful laser impinging on such a target.
A first part of this work has been devoted to the developpement of an under vacuum flowing system and to the choice of powder allowing different interaction regimes. Next we have studied some characteristics of this source like size, spectrum and maximum repetition rate. Finally, we deduced some interaction characteristics from the analysis of obtained spectra.
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https://tel.archives-ouvertes.fr/tel-00128860
Contributor : Marina Servol <>
Submitted on : Saturday, February 3, 2007 - 12:05:01 AM
Last modification on : Thursday, December 10, 2020 - 11:00:27 AM
Long-term archiving on: : Friday, September 21, 2012 - 10:50:54 AM

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  • HAL Id : tel-00128860, version 1

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Marina Servol. Géneration de rayonnement X par interaction laser-écoulement de poudre. Physique Atomique [physics.atom-ph]. Université Paris Sud - Paris XI, 2005. Français. ⟨tel-00128860⟩

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