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Sylla F, Veltcheva M, Kahaly S, Flacco A, Malka V. Development and characterization of very dense submillimetric gas jets for laser-plasma interaction. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2012; 83:033507. [PMID: 22462922 DOI: 10.1063/1.3697859] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We report on the characterization of recently developed submillimetric He gas jets with peak density higher than 10(21) atoms/cm(3) from cylindrical and slightly conical nozzles of throat diameter of less than 400 μm. Helium gas at pressure 300-400 bar has been developed for this purpose to compensate the nozzle throat diameter reduction that affects the output mass flow rate. The fast-switching electro-valve enables to operate the jet safely for multi-stage vacuum pump assembly. Such gaseous thin targets are particularly suitable for laser-plasma interaction studies in the unexplored near-critical regime.
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Veltcheva M, Borot A, Thaury C, Malvache A, Lefebvre E, Flacco A, Lopez-Martens R, Malka V. Brunel-dominated proton acceleration with a few-cycle laser pulse. PHYSICAL REVIEW LETTERS 2012; 108:075004. [PMID: 22401218 DOI: 10.1103/physrevlett.108.075004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2011] [Indexed: 05/31/2023]
Abstract
Experimental measurements of backward accelerated protons are presented. The beam is produced when an ultrashort (5 fs) laser pulse, delivered by a kHz laser system, with a high temporal contrast (10(8)), interacts with a thick solid target. Under these conditions, proton cutoff energy dependence with laser parameters, such as pulse energy, polarization (from p to s), and pulse duration (from 5 to 500 fs), is studied. Theoretical model and two-dimensional particle-in-cell simulations, in good agreement with a large set of experimental results, indicate that proton acceleration is directly driven by Brunel electrons, in contrast to conventional target normal sheath acceleration that relies on electron thermal pressure.
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Corde S, Phuoc KT, Fitour R, Faure J, Tafzi A, Goddet JP, Malka V, Rousse A. Controlled betatron x-ray radiation from tunable optically injected electrons. PHYSICAL REVIEW LETTERS 2011; 107:255003. [PMID: 22243084 DOI: 10.1103/physrevlett.107.255003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2011] [Indexed: 05/31/2023]
Abstract
The features of Betatron x-ray emission produced in a laser-plasma accelerator are closely linked to the properties of the relativistic electrons which are at the origin of the radiation. While in interaction regimes explored previously the source was by nature unstable, following the fluctuations of the electron beam, we demonstrate in this Letter the possibility to generate x-ray Betatron radiation with controlled and reproducible features, allowing fine studies of its properties. To do so, Betatron radiation is produced using monoenergetic electrons with tunable energies from a laser-plasma accelerator with colliding pulse injection [J. Faure et al., Nature (London) 444, 737 (2006)]. The presented study provides evidence of the correlations between electrons and x-rays, and the obtained results open significant perspectives toward the production of a stable and controlled femtosecond Betatron x-ray source in the keV range.
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Corde S, Thaury C, Phuoc KT, Lifschitz A, Lambert G, Faure J, Lundh O, Benveniste E, Ben-Ismail A, Arantchuk L, Marciniak A, Stordeur A, Brijesh P, Rousse A, Specka A, Malka V. Mapping the x-ray emission region in a laser-plasma accelerator. PHYSICAL REVIEW LETTERS 2011; 107:215004. [PMID: 22181891 DOI: 10.1103/physrevlett.107.215004] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2011] [Indexed: 05/31/2023]
Abstract
The x-ray emission in laser-plasma accelerators can be a powerful tool to understand the physics of relativistic laser-plasma interaction. It is shown here that the mapping of betatron x-ray radiation can be obtained from the x-ray beam profile when an aperture mask is positioned just beyond the end of the emission region. The influence of the plasma density on the position and the longitudinal profile of the x-ray emission is investigated and compared to particle-in-cell simulations. The measurement of the x-ray emission position and length provides insight on the dynamics of the interaction, including the electron self-injection region, possible multiple injection, and the role of the electron beam driven wakefield.
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Fourmaux S, Corde S, Phuoc KT, Lassonde P, Lebrun G, Payeur S, Martin F, Sebban S, Malka V, Rousse A, Kieffer JC. Single shot phase contrast imaging using laser-produced Betatron x-ray beams. OPTICS LETTERS 2011; 36:2426-2428. [PMID: 21725433 DOI: 10.1364/ol.36.002426] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Development of x-ray phase contrast imaging applications with a laboratory scale source have been limited by the long exposure time needed to obtain one image. We demonstrate, using the Betatron x-ray radiation produced when electrons are accelerated and wiggled in the laser-wakefield cavity, that a high-quality phase contrast image of a complex object (here, a bee), located in air, can be obtained with a single laser shot. The Betatron x-ray source used in this proof of principle experiment has a source diameter of 1.7 μm and produces a synchrotron spectrum with critical energy E(c)=12.3±2.5 keV and 10⁹ photons per shot in the whole spectrum.
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Rigaud O, Fortunel NO, Vaigot P, Cadio E, Martin MT, Lundh O, Faure J, Rechatin C, Malka V, Gauduel YA. Exploring ultrashort high-energy electron-induced damage in human carcinoma cells. Cell Death Dis 2010; 1:e73. [PMID: 21364677 PMCID: PMC3032345 DOI: 10.1038/cddis.2010.46] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Flacco A, Sylla F, Veltcheva M, Carrié M, Nuter R, Lefebvre E, Batani D, Malka V. Dependence on pulse duration and foil thickness in high-contrast-laser proton acceleration. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2010; 81:036405. [PMID: 20365880 DOI: 10.1103/physreve.81.036405] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2009] [Revised: 12/09/2009] [Indexed: 05/29/2023]
Abstract
Experimental measurements of proton acceleration with high intensity and high-contrast short laser pulses have been carried out over an order of magnitude range in target thickness and laser pulse duration. The dependence of the maximum proton energy with these parameters is qualitatively supported by two-dimensional particle-in-cell simulations. They evidence that two regimes of proton acceleration can take place, depending on the ratio between the density gradient and the hot electron Debye length at the rear target surface. As this ratio can be affected by the target thickness, a complex interplay between pulse duration and target thickness is observed. Measurements and simulations support unexpected variations in the laser absorption and hot electron temperature with the pulse duration and laser intensity, for which density profile modification at the target front surface is the controlling parameter.
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Rechatin C, Davoine X, Lifschitz A, Ben Ismail A, Lim J, Lefebvre E, Faure J, Malka V. Observation of beam loading in a laser-plasma accelerator. PHYSICAL REVIEW LETTERS 2009; 103:194804. [PMID: 20365930 DOI: 10.1103/physrevlett.103.194804] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2009] [Indexed: 05/29/2023]
Abstract
Beam loading is the phenomenon which limits the charge and the beam quality in plasma based accelerators. An experimental study conducted with a laser-plasma accelerator is presented. Beam loading manifests itself through the decrease of the beam energy, the reduction of dark current, and the increase of the energy spread for large beam charge. 3D PIC simulations are compared to the experimental results and confirm the effects of beam loading. It is found that, in our experimental conditions, the trapped electron beams generate decelerating fields on the order of 1 (GV/m)/pC and that beam loading effects are optimized for trapped charges of about 20 pC.
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Fuchs T, Szymanowski H, Oelfke U, Glinec Y, Rechatin C, Faure J, Malka V. Treatment planning for laser-accelerated very-high energy electrons. Phys Med Biol 2009; 54:3315-28. [DOI: 10.1088/0031-9155/54/11/003] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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35
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Rechatin C, Faure J, Ben-Ismail A, Lim J, Fitour R, Specka A, Videau H, Tafzi A, Burgy F, Malka V. Controlling the phase-space volume of injected electrons in a laser-plasma accelerator. PHYSICAL REVIEW LETTERS 2009; 102:164801. [PMID: 19518716 DOI: 10.1103/physrevlett.102.164801] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2008] [Indexed: 05/27/2023]
Abstract
To take full advantage of a laser-plasma accelerator, stability and control of the electron beam parameters have to be achieved. The external injection scheme with two colliding laser pulses is a way to stabilize the injection of electrons into the plasma wave, and to easily tune the energy of the output beam by changing the longitudinal position of the injection. In this Letter, it is shown that by tuning the optical injection parameters, one is able to control the phase-space volume of the injected particles, and thus the charge and the energy spread of the beam. With this method, the production of a laser accelerated electron beam of 10 pC at the 200 MeV level with a 1% relative energy spread at full width half maximum (3.1% rms) is demonstrated. This unique tunability extends the capability of laser-plasma accelerators and their applications.
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Davoine X, Lefebvre E, Rechatin C, Faure J, Malka V. Cold optical injection producing monoenergetic, multi-GeV electron bunches. PHYSICAL REVIEW LETTERS 2009; 102:065001. [PMID: 19257594 DOI: 10.1103/physrevlett.102.065001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2008] [Indexed: 05/27/2023]
Abstract
A cold optical injection mechanism for a laser-plasma accelerator is described. It relies on a short, circularly polarized, low-energy laser pulse counterpropagating to and colliding with a circularly polarized main pulse in a low density plasma. Contrary to previously published optical injection schemes, injection is not caused here by electron heating. Instead, the collision between the pulses creates a spatially periodic and time-independent beat force. This force can block the longitudinal electron motion, leading to their entry and injection into the propagating wake. In a specific setup, we compute after acceleration over 0.6 mm, a 60 MeV, 50 pC electron bunch with 0.7 MeV rms energy spread, proving the interest of this scheme to inject electron bunches with a narrow absolute energy spread. Acceleration to 3 GeV with a rms spread smaller than 1% is computed after propagation over 3.8 cm in a plasma channel.
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Aliverdiev A, Batani D, Dezulian R, Vinci T, Benuzzi-Mounaix A, Koenig M, Malka V. Coronal hydrodynamics of laser-produced plasmas. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2008; 78:046404. [PMID: 18999540 DOI: 10.1103/physreve.78.046404] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2008] [Indexed: 05/27/2023]
Abstract
We present the results of an experimental investigation of the temporal evolution of plasmas produced by high power laser irradiation of various types of target materials (at intensities I(L) < or = 10(14) W/cm2). We obtained interferometric data on the evolution of the plasma profile, which can directly be compared to analytical models and numerical simulations. For aluminum and plastic targets, the agreement with 1D simulations done with the hydrocode MULTI is excellent, at least for large times (t > or = 400 ps) . In this case, simulations also show that the effect of radiation transport is negligible. The situation is quite different for gold targets for which, in order to get a fair agreement, radiation transport must be taken into account.
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Gauduel Y, Glinec Y, Malka V. Femtoradical events in aqueous molecular environments: the tenuous borderline between direct and indirect radiation damages. ACTA ACUST UNITED AC 2008. [DOI: 10.1088/1742-6596/101/1/012004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Gerbaux M, Gobet F, Aléonard MM, Hannachi F, Malka G, Scheurer JN, Tarisien M, Claverie G, Méot V, Morel P, Faure J, Glinec Y, Guemnie-Tafo A, Malka V, Manclossi M, Santos JJ. High flux of relativistic electrons produced in femtosecond laser-thin foil target interactions: characterization with nuclear techniques. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2008; 79:023504. [PMID: 18315296 DOI: 10.1063/1.2840017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
We present a protocol to characterize the high energy electron beam emitted in the interaction of an ultraintense laser with matter at intensities higher than 10(19) W cm(-2). The electron energies and angular distributions are determined as well as the total number of electrons produced above a 10 MeV threshold. This protocol is based on measurements with an electron spectrometer and nuclear activation techniques, combined with Monte Carlo simulations based on the GEANT3 code. The method is detailed and exemplified with data obtained with polypropylene and copper thin solid targets at a laser intensity of 2x10(19) W cm(-2). Special care is taken of the different sources of uncertainties. In particular, the reproducibility of the laser shots is considered.
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Malka V, Fuchs T, Oelfke U, Szymanowski H, Faure J, Glinec Y, Rechatin C. TU-D-BRA-03: Laser-Accelerated Electrons for Radiation Therapy. Med Phys 2007. [DOI: 10.1118/1.2761400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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41
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Glinec Y, Faure J, Norlin A, Pukhov A, Malka V. Observation of fine structures in laser-driven electron beams using coherent transition radiation. PHYSICAL REVIEW LETTERS 2007; 98:194801. [PMID: 17677622 DOI: 10.1103/physrevlett.98.194801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2006] [Indexed: 05/16/2023]
Abstract
We have measured the coherent optical transition radiation emitted by an electron beam from laser-plasma interaction. The measurement of the spectrum of the radiation reveals fine structures of the electron beam in the range 400-1000 nm. These structures are reproduced using an electron distribution from a 3D particle-in-cell simulation and are attributed to microbunching of the electron bunch due to its interaction with the laser field. When the radiator is placed closer to the interaction point, spectral oscillations have also been recorded, signature of the interference of the radiation produced by two electron bunches delayed by 74 fs. The second electron bunch duration is shown to be ultrashort to match the intensity level of the radiation. Whereas transition radiation was used at longer wavelengths in order to estimate the electron bunch length, this study focuses on the ultrashort structures of the electron beam.
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Faure J, Rechatin C, Norlin A, Lifschitz A, Glinec Y, Malka V. Controlled injection and acceleration of electrons in plasma wakefields by colliding laser pulses. Nature 2006; 444:737-9. [PMID: 17151663 DOI: 10.1038/nature05393] [Citation(s) in RCA: 138] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2006] [Accepted: 10/26/2006] [Indexed: 11/09/2022]
Abstract
In laser-plasma-based accelerators, an intense laser pulse drives a large electric field (the wakefield) which accelerates particles to high energies in distances much shorter than in conventional accelerators. These high acceleration gradients, of a few hundreds of gigavolts per metre, hold the promise of compact high-energy particle accelerators. Recently, several experiments have shown that laser-plasma accelerators can produce high-quality electron beams, with quasi-monoenergetic energy distributions at the 100 MeV level. However, these beams do not have the stability and reproducibility that are required for applications. This is because the mechanism responsible for injecting electrons into the wakefield is based on highly nonlinear phenomena, and is therefore hard to control. Here we demonstrate that the injection and subsequent acceleration of electrons can be controlled by using a second laser pulse. The collision of the two laser pulses provides a pre-acceleration stage which provokes the injection of electrons into the wakefield. The experimental results show that the electron beams obtained in this manner are collimated (5 mrad divergence), monoenergetic (with energy spread <10 per cent), tuneable (between 15 and 250 MeV) and, most importantly, stable. In addition, the experimental observations are compatible with electron bunch durations shorter than 10 fs. We anticipate that this stable and compact electron source will have a strong impact on applications requiring short bunches, such as the femtolysis of water, or high stability, such as radiotherapy with high-energy electrons or radiography for materials science.
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Malka V. On the use of gas jet targets for laser plasma interaction physics with nanosecond laser pulses. ACTA ACUST UNITED AC 2006. [DOI: 10.1051/jp4:2006133057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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45
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Manclossi M, Santos JJ, Batani D, Faure J, Debayle A, Tikhonchuk VT, Malka V. Study of ultraintense laser-produced fast-electron propagation and filamentation in insulator and metal foil targets by optical emission diagnostics. PHYSICAL REVIEW LETTERS 2006; 96:125002. [PMID: 16605915 DOI: 10.1103/physrevlett.96.125002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2005] [Indexed: 05/08/2023]
Abstract
The transport of an intense electron beam produced by ultrahigh intensity laser pulses through metals and insulators has been studied by high resolution imaging of the optical emission from the targets. In metals, the emission is mainly due to coherent transition radiation, while in plastic, it is due to the Cerenkov effect and it is orders of magnitude larger. It is also observed that in the case of insulators the fast-electron beam undergoes strong filamentation and the number of filaments increases with the target thickness. This filamented behavior in insulators is due to the instability of the ionization front related to the electric field ionization process. The filamentary structures characteristic growth rate and characteristic transversal scale are in agreement with analytical predictions.
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Malka V, Faure J, Glinec Y, Lifschitz AF. Laser-plasma accelerator: status and perspectives. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2006; 364:601-10. [PMID: 16483951 DOI: 10.1098/rsta.2005.1725] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Laser-plasma accelerators deliver high-charge quasi-monoenergetic electron beams with properties of interest for many applications. Their angular divergence, limited to a few mrad, permits one to generate a small gamma ray source for dense matter radiography, whereas their duration (few tens of fs) permits studies of major importance in the context of fast chemistry for example. In addition, injecting these electron beams into a longer plasma wave structure will extend their energy to the GeV range. A GeV laser-based accelerator scheme is presented; it consists of the acceleration of this electron beam into relativistic plasma waves driven by a laser. This compact approach (centimetres scale for the plasma, and tens of meters for the whole facility) will allow a miniaturization and cost reduction of future accelerators and derived X-ray free electron laser (XFEL) sources.
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Glinec Y, Faure J, Malka V, Fuchs T, Szymanowski H, Oelfke U. Radiotherapy with laser-plasma accelerators: Monte Carlo simulation of dose deposited by an experimental quasimonoenergetic electron beam. Med Phys 2006; 33:155-62. [PMID: 16485422 DOI: 10.1118/1.2140115] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
The most recent experimental results obtained with laser-plasma accelerators are applied to radio-therapy simulations. The narrow electron beam, produced during the interaction of the laser with the gas jet, has a high charge (0.5 nC) and is quasimonoenergetic (170 +/- 20 MeV). The dose deposition is calculated in a water phantom placed at different distances from the diverging electron source. We show that, using magnetic fields to refocus the electron beam inside the water phantom, the transverse penumbra is improved. This electron beam is well suited for delivering a high dose peaked on the propagation axis, a sharp and narrow tranverse penumbra combined with a deep penetration.
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Faure J, Glinec Y, Santos JJ, Ewald F, Rousseau JP, Kiselev S, Pukhov A, Hosokai T, Malka V. Observation of laser-pulse shortening in nonlinear plasma waves. PHYSICAL REVIEW LETTERS 2005; 95:205003. [PMID: 16384066 DOI: 10.1103/physrevlett.95.205003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2005] [Indexed: 05/05/2023]
Abstract
We have measured the temporal shortening of an ultraintense laser pulse interacting with an underdense plasma. When interacting with strongly nonlinear plasma waves, the laser pulse is shortened from 38 +/- 2 fs to the 10-14 fs level, with a 20% energy efficiency. The laser ponderomotive force excites a wakefield, which, along with relativistic self-phase modulation, broadens the laser spectrum and subsequently compresses the pulse. This mechanism is confirmed by 3D particle in cell simulations.
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Elton C, Riaz AA, Young N, Schamschula R, Papadopoulos B, Malka V. Accuracy of computed tomography in the detection of blunt bowel and mesenteric injuries. Br J Surg 2005; 92:1024-8. [PMID: 15931660 DOI: 10.1002/bjs.4931] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Abstract
Background
There are conflicting views on the accuracy of computed tomography (CT) findings in patients with bowel and mesenteric injuries (BMIs) following blunt abdominal trauma. The aim of the present study was to assess the accuracy of the CT report during a trauma call.
Methods
Ninety-eight patients underwent preoperative abdominal spiral CT and subsequent laparotomy following blunt trauma between January 1996 and March 2001 at a level I trauma centre. The immediate results of the scans were reported by the on-call radiology registrar and written in the medical notes by the trauma team leader. Seventy of the 98 preoperative abdominal CT scans were retrieved from the radiology department and reported by two consultant radiologists with a special interest in trauma radiology.
Results
The sensitivity and specificity of the 70 expert CT reports were 80 (95 per cent confidence interval (c.i.) 66 to 94) and 78 (95 per cent c.i. 65 to 90) per cent respectively for diagnosing a BMI. The sensitivity and specificity of the immediate CT reports were 93 (95 per cent c.i. 84 to 100) and 71 (95 per cent c.i. 60 to 83) per cent respectively.
Conclusion
Spiral CT is highly sensitive for detecting a BMI following blunt abdominal trauma. This sensitivity is maintained when the scan is reported by a radiology registrar.
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Fuchs T, Szymanowski H, Glinec Y, Faure J, Malka V, Oelfke U. TH-C-T-6C-10: Simulation of Dosimetric Properties of Very-High Energy Laser-Accelerated Electron Beams. Med Phys 2005. [DOI: 10.1118/1.1998666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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