Microjet formation and hard x-ray production from a liquid metal target irradiated by intense femtosecond laser pulses
| Autor: | T. Bonnet, D. S. Uryupina, Andrei B Savel'ev, C. Fourment, F. Gobet, K. M. Spohr, Vladimir Tikhonchuk, B. Chimier, M. Versteegen, Jérôme Breil, M. Tarisien, F. Hannachi, A. S. Lar’kin, Fabien Dorchies, K.A. Ivanov, P. M. Leguay |
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| Přispěvatelé: | Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Physics
[PHYS]Physics [physics] Jet (fluid) Electron Condensed Matter Physics Laser 01 natural sciences Electromagnetic radiation 010305 fluids & plasmas law.invention Pulse (physics) law 0103 physical sciences Femtosecond Plasma diagnostics Atomic physics 010306 general physics Absorption (electromagnetic radiation) |
| Zdroj: | Physics of Plasma Physics of Plasma, AIP Publishing, 2014, 21 (9), pp.093103. ⟨10.1063/1.4894099⟩ |
| ISSN: | 1089-7674 |
| DOI: | 10.1063/1.4894099⟩ |
| Popis: | International audience; By using a liquid metal as a target one may significantly enhance the yield of hard x-rays with a sequence of two intense femtosecond laser pulses. The influence of the time delay between the two pulses is studied experimentally and interpreted with numerical simulations. It was suggested that the first arbitrary weak pulse produces microjets from the target surface, while the second intense pulse provides an efficient electron heating and acceleration along the jet surface. These energetic electrons are the source of x-ray emission while striking the target surface. The microjet formation is explained based on the results given by both optical diagnostics and hydrodynamic modeling by a collision of shocks originated from two distinct zones of laser energy deposition. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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