Publications

2006

• Experimental study of a drifting low temperature plasma extracted from a magnetized plasma column
  
  • Brault C.
  • Escarguel A.
  • Pierre Thiery
  • Redon Roland
  • Bois A.
  • Koubiti M.
  • Rosmej F.
  • Stamm R.
  • Quotb K.
  Modern Physics Letters A, World Scientific Publishing, 2006, 360 (2), pp.299-303. (10.1016/j.physleta.2006.08.018)
  DOI : 10.1016/j.physleta.2006.08.018
• Chocs laser sur le diamant, l hélium et l hydrogène: une etude experimentale de la ''Warm Dense Matter.
  
  • Brygoo Stéphanie
  , 2006. La connaissance de l'équation d'état de systèmes d'hélium, d'hydrogène et de diamant dans le domaine des hautes pressions et températures est un problème ouvert, très controversé et présentant des applications astrophysiques importantes. Les approches théoriques pour cet état de la matière à l'interface de la physique de la matière condensée et de la physique des plasmas, appelé dans la littérature Warm Dense Matter, ne sont pas encore entièrement satisfaisantes. Une des raisons est qu'il n'existe pratiquement pas de données expérimentales pour valider les approximations dans ce domaine du diagramme de phase. En effet les approches statiques ou dynamiques seules ne peuvent atteindre ces états. En 2002, une première démonstration de la possibilité du couplage des compressions statiques et dynamiques, par génération de chocs laser dans des presses à enclumes de diamant, a ouvert la voie de l'étude de l'équation d'état de la matière très dense et chaude. Dans ce travail de thèse, nous avons optimisé les cibles et développé une nouvelle métrologie basée sur le quartz comme système de référence dans le but de réduire au maximum les barres d'erreur. Des mesures précises de la pression, la température, la densité et la réflectivité peuvent ainsi être obtenues. Cette méthode a ensuite été appliquée à différents systèmes. De nombreux résultats ont alors été obtenus sur le diamant (existence d'un maximum sur le courbe de fusion), sur l'hélium (va! lidation du modèle de Saumon-Chabrier), sur l'hydrogène (passage continue entre un état isolant et un état conducteur) et sur les mélanges hydrogène/hélium (pas de signe évident de séparation de phase).
• Measurement of XUV-absorption spectra of ZnS radiatively heated foils
  
  • Kontogiannopoulos Nikolaos
  • Bastiani-Ceccotti Serena
  • Thais Frédéric
  • Chenais-Popovics Claude
  • Sauvan Pascal
  • Schott R.
  • Fölsner Wolfgang
  • Arnault Philippe
  • Poirier Michel
  • Blenski Thomas
  , 2007, 3, pp.149. Time-resolved absorption of zinc sulfide (ZnS) and aluminum in the XUV-range has been measured. Thin foils in conditions close to local thermodynamic equilibrium were heated by radiation from laser-irradiated gold spherical cavities. Analysis of the aluminum foil radiative hydrodynamic expansion, based on the detailed atomic calculations of its absorption spectra, showed that the cavity emitted flux that heated the absorption foils corresponds to a radiation temperature in the range 55 60 eV. Comparison of the ZnS absorption spectra with calculations based on a superconfiguration approach identified the presence of species Zn6+ - Zn8+ and S5+ - S6+. Based on the validation of the radiative source simulations, experimental spectra were then compared to calculations performed by post-processing the radiative hydrodynamic simulations of ZnS. Satisfying agreement is found when temperature gradients are accounted for. (10.1016/j.hedp.2007.02.011)
  DOI : 10.1016/j.hedp.2007.02.011
• 1-kHz table-top ultrashort hard x-ray source for time-resolved x-ray protein
  
  • Bonvalet Adeline
  • Darmon Adeline
  • Lambry Jean-Christophe
  • Martin Jean-Louis
  • Audebert Patrick
  Optics Letters, Optical Society of America - OSA Publishing, 2006, 31 (18), pp.2753. We describe a compact, reliable, and high-average-power femtosecond x-ray source and its first application to diffraction on protein crystal. The setup relies on a homemade Ti: sapphire system delivering 12 mJ at a 1 kHz repetition rate, associated with a small vacuum chamber especially designed for laser-plasma interaction and x-ray applications. This device allows the generation of 5×109 photons/s/sr at 8 keV and optimized x-ray irradiation of the studied sample, which can be placed close to the source. We present the diffraction pattern of a protein crystal in a divergent beam geometry, which is a first step to a subpicosecond x-ray diffraction experiment. (10.1364/OL.31.002753)
  DOI : 10.1364/OL.31.002753
• Towards ultrahigh-contrast ultraintense laser pulses—complete characterization of a double plasma-mirror pulse cleaner
  
  • Wittmann T.
  • Geindre Jean-Paul
  • Audebert P.
  • Marjoribanks R. S.
  • Rousseau Jean-Philippe
  • Burgy Frédéric
  • Douillet D.
  • Lefrou T.
  • Ta Phuoc Kim
  • Chambaret Jean-Paul
  Review of Scientific Instruments, American Institute of Physics, 2006, 77 (8), pp.083109. The effects of small amounts of energy delivered at times before the peak intensity of ultrahigh-intensity ultrafast-laser pulses have been a major obstacle to the goal of studying the interaction of ultraintense light with solids for more than two decades now. We describe implementation of a practical double-plasma-mirror pulse cleaner, built into a f = 10 m null telescope and added as a standard beamline feature of a 100 TW laser system for ultraintense laser-matter interaction. Our measurements allow us to infer a pulse-height contrast of 5×10^11—the highest contrast generated to date—while preserving ∼ 50% of the laser intensity and maintaining excellent focusability of the delivered beam. We present a complete optical characterization, comparing empirical results and numerical modeling of a double-plasma-mirror system. (10.1063/1.2234850)
  DOI : 10.1063/1.2234850
• Nuclear activation techniques for analysis of laser induced energetic protons
  
  • Tarisien M.
  • Gobet F.
  • Hannachi F.
  • Aléonard M.M.
  • Claverie G.
  • Gerbaux M.
  • Malka G.
  • Scheurer J.N.
  • Méot V.
  • Morel Pierre
  • Audebert P.
  • Brambrink E.
  • Nicolai P.
  • Tikhonchuk V.
  • Amthor K.U.
  , 2006, pp.592-597. With the very rapid development of high intensity lasers, very high protons fluxes (at least 10$^{13}$ protons are expected in a few picoseconds bunch) will be available which cannot be characterized by usual detection techniques. For that purpose, we have developed a method in which the particles induce nuclear reactions in a stack of copper foils leading to β$^{+}$ emitters of short periods which can be detected with a very good signal to noise ratio. The initial kinetic energy distribution of the incident particles is reconstructed from the number of reactions induced in each foil. This technique has been validated at the 12 MV Tandem of CEA/DAM Bruyères-le-Châtel and used at the 100TW laser of LULI to characterize laser-accelerated proton beams. In the latter case, comparison is made with the results obtained with radiochromic films.
• Les chocs radiatifs générés par les lasers à haute énergie: une opportunité pour l'astrophysique de laboratoire.
  
  • Vinci Tommaso
  , 2006. Le travail de cette thèse s'inscrit dans le vaste domaine de l'astrophysique de laboratoire, avec la création et la caractérisation d'un régime dans lequel la matière et le rayonnement sont étroitement couplés. Cela met en jeu des techniques de génération de chocs très rapides et très chauds conduisant à ce que l'on appelle les chocs radiatifs. L'objectif de cette thèse est d'une part de recréer en laboratoire les conditions d'un choc radiatif, d'autre part de l'étudier en mesurant un grand nombre de paramètres simultanément pour donner une cohérence la plus haute possible. On présentera aussi pour chaque mesure, la comparaison avec les codes de simulation de l'hydrodynamique radiative. Au cours de cette thèse, nous avons effectué au sein du laboratoire LULI deux campagnes expérimentales sur deux installations laser différentes (l'ancienne chaîne 6F et le tout nouveau LULI2000). La première campagne s'est déroulée en 2002 et la seconde au début 2005. Ces expériences ont fait l'objet de nombreuses collaborations. Outre l'apport important des équipes techniques du LULI (équipe laser, équipe d'exploitation, équipe mécanique, ...), les équipes extérieures (le CEA-DAM, le LUTH et le GEPI de l'observatoire de Paris Meudon et l'université de Rome «La Sapienza» en Italie) ont notamment participé à la définition des expériences, la conception et fabrication des cibles et au calcul numérique.
• Coherent Wake Emission of High-Order Harmonics from Overdense Plasmas
  
  • Quéré F.
  • Thaury Cédric
  • Monot P.
  • Dobosz S.
  • Martin Ph.
  • Geindre J.-P.
  • Audebert P.
  Physical Review Letters, American Physical Society, 2006, 96, pp.125004. (10.1103/PhysRevLett.96.125004)
  DOI : 10.1103/PhysRevLett.96.125004
• Nonlinear temporal pulse cleaning of a 1-μm optical parametric chirped-pulse amplification system
  
  • Cotel Arnaud
  • Jullien A.
  • Forget A.
  • Albert O.
  • Cheriaux Gilles
  • Le Blanc C.
  Applied Physics B - Laser and Optics, Springer Verlag, 2006, 83 (1), pp.7-10. We demonstrate the technique of cross-polarized wave (XPW) generation at 1 μm with a 310-fs optical parametric chirped-pulse amplification system at the millijoule level. We show an improvement of the temporal contrast by three orders of magnitude with an energy transmission of 22%. Additionally, we report that XPW generation preserves the beam spatial quality and shortens the pulse duration by a factor of 3^1/2, resulting in a peak power transmission of ∼35%. (10.1007/s00340-006-2143-z)
  DOI : 10.1007/s00340-006-2143-z
• Nonlinear temporal pulse cleaning for high-energy petawatt-class lasers
  
  • Cotel Arnaud
  • Jullien A.
  • Forget A.
  • Albert O.
  • Le Blanc C.
  • Etchepare Jean
  • Cheriaux Gilles
  • Minkovski Nikolay
  • Saltiel Solomon M.
  Journal de Physique IV Proceedings, EDP Sciences, 2006, 133, pp.713-715. We present a new nonlinear solid-state technique for temporal femtosecond pulses cleaning. The contrast reaches 10^-10 for millijoule input pulse. Efficiency is demonstrated at 800 nm and 1 μm. The method is reliable enough to solve the contrast issue for Petawatt class lasers. (10.1051/jp4:2006133144)
  DOI : 10.1051/jp4:2006133144
• Second generation X-ray lasers
  
  • Fajardo Marta
  • Zeitoun Philippe
  • Faivre Gabriel
  • Sebban Stéphane
  • Mocek T.
  • Hallou A.
  • Aubert D.
  • Balcou Philippe
  • Burgy F.
  • Douillet D.
  • Mercere P.
  • Morlens Anne-Sophie
  • Rousseau Jean-Philippe
  • Valentin C.
  • Kazamias S.
  • Lachèze-Murel G. De
  • Lefrou T.
  • Merdji H.
  • Pape S. Le
  • Ravet Marie-Françoie
  • Delmotte Franck
  • Gautier Julien
  Journal of Quantitative Spectroscopy and Radiative Transfer, Elsevier, 2006, 99 (1-3), pp.142-152. High harmonic amplification is shown in an optical-field ionized X-ray laser. The 4d–4p X-ray line of Kr^8+ at 32.8 nm, which has a close match to the 25th harmonic of the infrared laser, was amplified up to 200 times. The energy-extraction regime was also achieved, which depended on the level of seeding. This second-generation X-ray laser is fully polarized, has low divergence and shows a high degree of coherence. The duration is also expected to be short, fulfilling the requirements for an ultra-intense tabletop X-ray laser. Conditions for higher energy output are also suggested. (10.1016/j.jqsrt.2005.05.011)
  DOI : 10.1016/j.jqsrt.2005.05.011
• Publisher's Note: ``Temperature and electron density measurements on laser driven radiative shocks'' [Phys. Plasmas 13, 010702 (2006)]
  
  • Vinci Tommaso
  • Koenig M.
  • Benuzzi-Mounaix Alessandra
  • Michaut Claire
  • Boireau Laurent
  • Leygnac Sébastien
  • Bouquet Serge
  • Peyrusse Olivier
  • Batani D.
  Physics of Plasmas, American Institute of Physics, 2006, 13, pp.9903. Not Available (10.1063/1.2202311)
  DOI : 10.1063/1.2202311
• High density energy physics experiments on LULI 2000 facility
  
  • Benuzzi-Mounaix Alessandra
  • Koenig M.
  • Ravasio Alessandra
  • Vinci Tommaso
  • Ozaki Norimasa
  • Lepape S.
  • Rabec Le Gloahec M.
  • Michaut Claire
  • Boireau Laurent
  • Bouquet Serge
  • Brygoo S.
  • Henry E.
  • Loubeyre P.
  • Riley David
  • Tanaka K.
  Journal de Physique IV Proceedings, EDP Sciences, 2006, 133, pp.1065-1070. We present here a summary of various and preliminary experiments performed on the new facility LULI 2000. Four topics in the High Density Energy Physics have been investigated: a Equation of State: we studied pre-compressed water, one of most abundant component of Uranus and Neptune's mantle. We used a recent technique based on generating a shock into a diamond anvil cell pre-compressed target. Some new data on EOS surface in the range 2-3 Mbar have been obtained. b X-ray Thomson scattering: a strongly coupled and degenerated Aluminum plasma has been produced and probed by Ti He-alpha radiation. By using a curved spectrometer, the scattered spectrum has been measured a Compton shift from electrons has been put in evidence. c Astrophysics in the laboratory: A radiative supercritical shock has been produced into a gas cell filled with a low density of Xenon (0.1-0.3 bar). Various diagnostics have been implemented to determine electron density variation, precursor and shock velocities, the 2D shape of the shock at different times and electron temperature. d Laser accelerated flyer: different flyer plate targets have been tested. Typical shock loaded material was fused-quartz plate. Flyer velocities up to 55 km/s have been measured. (10.1051/jp4:2006133216)
  DOI : 10.1051/jp4:2006133216
• Radiative shocks: New results for laboratory astrophysics
  
  • Vinci Tommaso
  • Koenig M.
  • Benuzzi-Mounaix Alessandra
  • Ozaki Norimasa
  • Ravasio Alessandra
  • Boireau Laurent
  • Michaut Claire
  • Bouquet Serge
  • Atzeni S.
  • Schiavi A.
  • Peyrusse Olivier
  Journal de Physique IV Proceedings, EDP Sciences, 2006, 133, pp.1039-1041. In the framework of the Laboratory Astrophysics, we present new radiative shocks experiments performed using the LULI2000 facility. A strong shock is driven in a multi-layered solid target (CH-Ti-CH) which accelerates into a gas cell (˜ 60 km/s) filled with Xenon at low pressure (0.1 - 0.3 bar) and produces a radiative supercritical shock [4, 8]. A low power laser beam (8 ns - 532 nm) probes the Xenon gas in the transverse direction and is injected into a VISAR and on two optical framing cameras (GOI). These diagnostics allow to determine electron density variation, to measure both precursor and shock velocities along the shock propagation axis [3, 5] as well as the 2D shape of the shock. On rear side, the light emitted from the shocked Xenon is imaged onto the slit of a streak camera. An absolute calibration of the optical system allows to determine the brightness temperature [8]. Data were obtained for different laser intensities and gas pressures. Two VISARs on rear side allowed an accurate measurement of the shock conditions in the pusher before the breakout in the Xenon. Comparison between 1D (MULTI) and 2D (DUED [1, 2]) radiative hydrodynamic codes and measured quantities (shock velocity, shape, radial expansion, and temperature as well as precursor velocity and precursor electron density) are presented. (10.1051/jp4:2006133210)
  DOI : 10.1051/jp4:2006133210
• Observation of collapsing radiative shocks in laboratory experiments
  
  • Reighard A. B.
  • Drake R. P.
  • Dannenberg K. K.
  • Kremer D. J.
  • Grosskopf M.
  • Harding E. C.
  • Leibrandt D. R.
  • Glendinning S. G.
  • Perry T. S.
  • Remington B. A.
  • Greenough J.
  • Knauer J. P.
  • Boehly T.
  • Bouquet Serge
  • Boireau Laurent
  • Koenig M.
  • Vinci Tommaso
  Physics of Plasmas, American Institute of Physics, 2006, 13, pp.2901. This article reports the observation of the dense, collapsed layer produced by a radiative shock in a laboratory experiment. The experiment uses laser irradiation to accelerate a thin layer of solid-density material to above 100 km/s, the first to probe such high velocities in a radiative shock. The layer in turn drives a shock wave through a cylindrical volume of Xe gas (at ~6 mg/cm<SUP>3</SUP>). Radiation from the shocked Xe removes enough energy that the shocked layer increases in density and collapses spatially. This type of system is relevant to a number of astrophysical contexts, providing the potential to observe phenomena of interest to astrophysics and to test astrophysical computer codes. (10.1063/1.2222294)
  DOI : 10.1063/1.2222294
• Radiative shocks: An opportunity to study laboratory astrophysics
  
  • Koenig M.
  • Vinci Tommaso
  • Benuzzi-Mounaix Alessandra
  • Ozaki Norimasa
  • Ravasio Alessandra
  • Rabec Le Gloahec M.
  • Boireau Laurent
  • Michaut Claire
  • Bouquet Serge
  • Atzeni S.
  • Schiavi A.
  • Peyrusse Olivier
  • Batani D.
  Physics of Plasmas, American Institute of Physics, 2006, 13, pp.6504. In this paper, experimental results on radiative shocks generated by a high power laser in a xenon gas cell are presented. Two sets of experiments have been performed at the Laser pour l'Utilisation des Lasers Intenses (LULI) laboratory. Several shock parameters were simultaneously measured: shock temperature and velocities, the precursor two-dimensional (2D) time evolution, its electron density, density gradient, and temperature. Data were obtained varying initial conditions for different laser intensities and gas pressures. Comparisons with 1D and 2D radiative hydrodynamic simulations are shown for all measured parameters (shock velocity, shape, radial expansion, and temperature as well as precursor velocity and electron density). (10.1063/1.2177637)
  DOI : 10.1063/1.2177637
• Journal of quantitative spectroscopy & radiative transfer
  
  • Fajardo M.
  • Zeitoun Philippe
  • Faivre Gabriel
  • Sebban Stéphane
  • Mocek T.
  • Hallou A.
  • Aubert D.
  • Balcou Philippe
  • Burgy F.
  • Douillet D.
  • Mercere Pascal
  • Morlens Anne-Sophie
  • Rousseau Jean-Philippe
  • Valentin Constance
  • Kazamias Sophie
  • Lachèze-Murel G. De
  • Lefrou T.
  • Merdji Hamed
  • Le Pape S.
  • Ravet-Krill Marie-Françoise
  • Delmotte Franck
  • Gautier Julien
  Journal of Quantitative Spectroscopy and Radiative Transfer, Elsevier, 2006, 99 (1-3), pp.142-152. High harmonic amplification is shown in an optical-field ionized X-ray laser. The 4d-4p X-ray line of Kr8+ at 32.8 nm, which has a close match to the 25th harmonic of the infrared laser, was amplified up to 200 times. The energy-extraction regime was also achieved, which depended on the level of seeding. This second-generation X-ray laser is fully polarized, has low divergence and shows a high degree of coherence. The duration is also expected to be short, fulfilling the requirements for an ultra-intense tabletop X-ray laser. Conditions for higher energy output are also suggested.
• Experimental and numerical studies of radiative shocks
  
  • Michaut Claire
  • Boireau Laurent
  • Vinci Tommaso
  • Bouquet Serge
  • Koenig M.
  • Benuzzi-Mounaix Alessandra
  • Ozaki Norimasa
  • Clique Christine
  • Atzeni S.
  Journal de Physique IV Proceedings, EDP Sciences, 2006, 133, pp.1013-1017. This paper deals with radiative shocks from both theoretical and experimental viewpoints. First, experimental results obtained at Laboratoire d'Utilisation des Lasers Intenses (LULI) at high (E&tilde;400-800 J) energies are presented. The modeling of these phenomena is mainly performed through numerical simulations (1D and 2D calculations). We compare simulations given by several radiative hydrodynamics codes and discuss numerical methods employed. The lateral radiative looses are examined. A major point for discussion is the physical data (EOS, ionization, opacities) included in these codes. It is shown that the radiative precursor length depends on the dimensionality of codes and on the opacities employed. Additional quantities (temperature of the shock, electron density in the precursor) are also calculated and good agreement is obtained with the experimental data. (10.1051/jp4:2006133205)
  DOI : 10.1051/jp4:2006133205
• Laser-driven shock waves for the study of extreme matter states
  
  • Benuzzi-Mounaix Alessandra
  • Koenig M.
  • Ravasio Alessandra
  • Vinci Tommaso
  • Ozaki Norimasa
  • Rabec Le Gloahec M.
  • Loupias B.
  • Huser Gaël
  • Henry E.
  • Bouquet Serge
  • Michaut Claire
  • Hicks D.
  • Mackinnon Alexander L.
  • Patel P.
  • Park H. S.
  • Lepape S.
  • Boehly T.
  • Borghesi M.
  • Cecchetti C.
  • Notley M. M.
  • Clark Roger N.
  • Bandyopadhyay S.
  • Atzeni S.
  • Schiavi A.
  • Aglitskiy Y.
  • Faenov A. Ya.
  • Pikuz T.
  • Batani D.
  • Dezulian R.
  • Tanaka K.
  Plasma Physics and Controlled Fusion, IOP Publishing, 2006, 48, pp.347-B358. During the last ten years, the ability of high power lasers to generate high energy density shocks has made them a reliable tool to study extreme states of matter. These states of matter are relevant in many important physics areas such as astrophysics, planetology and ICF physics. Here, we present some representative studies performed by using a driven laser shock: melting of iron at pressures relevant for geophysics, developments of new techniques to measure the density of highly compressed matter and a study of a radiative shock. (10.1088/0741-3335/48/12B/S32)
  DOI : 10.1088/0741-3335/48/12B/S32
• Time-resolved X-ray spectra of hot &amp; dense plasmas from laser-clusters interaction
  
  • Dorchies F.
  • Bonte C.
  • Blasco F.
  • Caillaud T.
  • Fedosejevs R.
  • Fourment C.
  • Harmand M.
  • Peyrussel O.
  • Santos J. J.
  • Stevefelt J.
  Journal de Physique IV Proceedings, EDP Sciences, 2006, 133, pp.963-966. no abstract (10.1051/jp4:2006133193)
  DOI : 10.1051/jp4:2006133193
• Spectral and temporal characterisation of the X emission from laser-aggregate interaction
  
  • Bonte C.
  • Fourment C.
  • Harmand M.
  • Jouin H.
  • Micheau S.
  • Peyrusse O.
  • Pons B.
  • Santos J. J.
  • Dorchies F.
  Journal de Physique IV Proceedings, EDP Sciences, 2006, 138, pp.73-81. (10.1051/jp4:2006138009)
  DOI : 10.1051/jp4:2006138009
• Ultrafast Laser Driven Micro-Lens to Focus and Energy Select MeV Protons
  
  • Toncian Toma
  • Borghesi Marco
  • Fuchs Julien
  • d'Humières Emmanuel
  • Antici Patrizio
  • Audebert Patrick
  • Brambrink Erik
  • Cecchetti Carlo A
  • Pipahl Ariane
  • Romagnani Lorenzo
  • Willi Oswald
  Science, American Association for the Advancement of Science (AAAS), 2006, 312 (5772), pp.410-413. We present a technique for simultaneous focusing and energy selection of high-current, MeV proton beams using radial, transient electric fields (10 7-10 10 V/m) triggered on the inner walls of a hollow micro-cylinder by an intense, subpicosecond laser pulse. Due to the transient nature of the focusing fields, the proposed method allows selection of a desired range out of the spectrum of the polyenergetic proton beam. This technique addresses current drawbacks of laser accelerated proton beams, i.e. their broad spectrum and divergence at the source. (10.1126/science.1124412)
  DOI : 10.1126/science.1124412
• Multi-Petawatt High Energy laser project on the LIL facility in Aquitaine - art. no. 59750C
  
  • Blanchot N.
  • Bignon E.
  • Coic H.
  • Cotel A.
  • Couturier E.
  • Deschaseaux G.
  • Forget N.
  • Freysz E.
  • Hugonnot E.
  • Le Blanc C.
  • Loustalet N.
  • Luce J.
  • Marre G.
  • Migus A.
  • Montant S.
  • Mousset S.
  • Noailles S.
  • Neauport J.
  • Rouyer C.
  • Rulliere C.
  • Sauteret C.
  • Videau L.
  • Vivini P.
  Topical Problems of Nonlinear Wave Physics, 2006, 5975, pp.C9750-C9750. A Multi-Petawatt High-Engergy laser coupled to the LIL (MPWHE-LIL) is under construction in the Aquitaine Region in France. This facility will be open to academic community. Nd:glass laser chain and Chirped Pulse Amplification (CPA)technique makes possible to deliver high energy. Optical Parametric Chirped Pulse Amplification (OPCPA) for pre-amplification and new compression scheme will be implemented. The MPWHE-LIL will deliver output energy of 3.6 kJ in 500 fs on target corresponding to more than 7 PW. The PW laser facility linked to UV-60kJ-ns beam from LIL, will give new scientific research opportunities. (10.1117/12.675495)
  DOI : 10.1117/12.675495
• Ultra-short x-ray source from laser-clusters interaction
  
  • Dorchies F.
  • Bonte C.
  • Blasco F.
  • Caillaud T.
  • Fourment C.
  • Harmand M.
  • Peyrusse O.
  • Santos J. J.
  • Stevefelt J.
  , 2006, 5975. no abstract
• Laser-driven proton scaling laws and new paths towards energy increase
  
  • Fuchs J.
  • Antici P.
  • d'Humières E.
  • Lefebvre E.
  • Borghesi M.
  • Brambrink E.
  • Cecchetti C. A.
  • Kaluza M.
  • Malka Victor
  • Manclossi M.
  • Meyroneinc S.
  • Mora P.
  • Schreiber J.
  • Toncian T.
  • Pépin H.
  • Audebert P.
  Nature Physics, Nature Publishing Group [2005-....], 2006, 2 (1), pp.48-54. The past few years have seen remarkable progress in the development of laser-based particle accelerators. The ability to produce ultrabright beams of multi-megaelectronvolt protons routinely has many potential uses from engineering to medicine, but for this potential to be realized substantial improvements in the performances of these devices must be made. Here we show that in the laser-driven accelerator that has been demonstrated experimentally to produce the highest energy protons, scaling laws derived from fluid models and supported by numerical simulations can be used to accurately describe the acceleration of proton beams for a large range of laser and target parameters. This enables us to evaluate the laser parameters needed to produce high-energy and high-quality proton beams of interest for radiography of dense objects or proton therapy of deep-seated tumours. (10.1038/nphys199)
  DOI : 10.1038/nphys199