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Showing 1 to 16 of 16 for “"Petawatt"”.
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Schemes of ion acceleration employing high energy, petawatt laser pulses
… laser pulses. In two separate campaigns on the petawatt arm of the Vulcan laser system, novel laser and target parameters were implemented to explore schemes of ion acceleration beyond the well established target normal sheath acceleration (TNSA) regime, namely radiation pressure acceleration …
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Transition from transparency to hole-boring in relativistic laser-solid interactions at the Texas Petawatt
… through adjustments to the pumping of the Texas Petawatt OPA stages, showing that a small adjustment leads to a significantly steeper plasma profile on shot. In addition, the plasma measurements taken are used to validate hydrodynamic simulations of the plasma density profile on shot. 1-D …
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Entwicklung, Modellierung und Aufbau des 10 Joule-Vorverstärkers mit adaptiver Optik für den Petawatt-Laser PHELIX
An der GSI Darmstadt entsteht derzeit der Petawatt-Laser für Schwerionen-Experimente, PHELIX. In Kombination mit dem Schwerionenbeschleuniger verspricht man sich neue Zugänge in der Erforschung von Licht-Materie Wechselwirkungen im Bereich von 10-100 eV. Der Laser ist als MOPA-System entworfen und …
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Proton acceleration experiment by high intensity laser pulse interaction with solid density target at the Texas Petawatt Laser Facility
… To investigate proton acceleration at the Texas Petawatt Facility, the experimental set up and target alignmen will be introduced in the chapter 5. While the analysis of data acquired from this experiment is still unfinished, a brief result with RCF image will be introduced in chapter 6.
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On The Origin of Super-Hot Electrons in Intense Laser-Plasma Interactions
… and positrons was performed at the Texas Petawatt laser which resulted in the observation of the highest known positron energies ever recorded. The positrons are created by the Bethe-Heitler process where an electron scatters and emits bremsstrahlung radiation which then interacts with an …
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Laser-driven beams of fast ions, relativistic electrons and coherent x-ray photons
… have made available peak powers reaching the petawatt regime and focused intensities reaching 10^21 W/cm2. When interacting with matter, the extreme energy density (several GJ/cm3) associated with the focused laser pulses can create exceptionally high quasi-stationary electric fields, beyond …
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Electron Generations and Transportation in Fast Ignition Experiments
… The experiment was performed using the Vulcan PetaWatt laser at the Rutherford Appleton Laboratory. Capsules in which a re-entrant gold cone has been imbedded were involved in the experiment as targets. Gold cone targets, with a wall thickness of 20 μm and a tip thickness of 6 μm were used in …
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Spectrum and conversion efficiency measurements of suprathermal electrons from relativistic laser plasma interactions
… Inertial Confinement Fusion (ICF) that uses a petawatt laser to ignite a hot spot in precompressed fuel. The laser delivers its energy into relativistic electrons at the critical surface of the blowoff plasma. These electrons must propagate to the fuel core and deliver their energy to a hot …
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Effects of Radiation Damping in Extreme Ultra-intense Laser-Plasma Interaction
… a laser with intensity 1021 W/cm2 by focusing a petawatt class laser. In a few years, the intensity will exceed 1022 W/cm2, at which intensity electrons accelerated by the laser get energy more than 100 MeV and start to emit radiation strongly. Resultingly, the damping of electron motion can …
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Effects of Laser Frequency and Multiple Beams on Hot Electron Generation in Fast Ignition
… In the fast ignition (FI) scheme, a picosecond petawatt laser pulse is used to deposit ∼10 kJ of energy in ∼10 ps into a small hot-spot at the periphery of the compressed core, igniting a fusion burn wave. FI promises a much higher energy gain over the conventional central hot-spot …
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Increased Proton Energies - Above the ~ 60 MeV Empirical Barrier, from High-Contrast High-Intensity Short-Pulse Laser-Interactions with Micro-Cone Targets
… in laser-accelerated protons. The previous petawatt laser record was 58 MeV with ~ 400 J [6]. Electron spectroscopy in the enhanced contrast case shows an even better correlation with proton energy, due to a cleaner interaction caused by a lower preplasma level. Besides diagnosing the laser …
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Design and realization of a beam transport line for handling and selecting laser-driven ion beams for multidisciplinary applications
… enabling simultaneously high peak power (multi-Petawatt) and high repetition rate (up to 10 Hz) which are about to be available at ELI-Beamlines (Dolní Břežany, Czech Republic). As an example of possible advantages of a laser-based approach, transporting the laser pulse to the treatment rooms …
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Intra-pulse dynamics of laser-driven ion acceleration in ultra-thin foils
… Rutherford Appleton Laboratory, using the Vulcan Petawatt laser system. The first investigation explores the spatial-intensity profile of the proton beam accelerated from thin (tens of nanometre) aluminium targets.The beam of accelerated protons displayed a variety of features, including a …
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Relativistische Quantendynamik in extrem starken Laserfeldern
… Strahlen gestattet bei Verwendung eines Petawatt-Lasersystems ebenfalls Energiegewinne bis in den GeV-Bereich, wenn realistisch modellierte Kombinationen aus Strahl- und Pulsform benutzt werden. <br> <br>Die Arbeit benutzt durchgängig den Formalismus der sogenannten Clifford-Algebra über …
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Radiation generation and high-field physics phenomena in ultra-intense laser-solid interactions
… which will be measured at upcoming multi-petawatt laser facilities (for which intensities exceeding 10exp23 Wcm−2 should be accessible). The associated laser fields have sufficiently strong magnitudes that quantum electrodynamics (QED) effects play a significant role in the …
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Laser-Driven Particle Acceleration - Improving Performance Through Smart Target Design
Laser-driven particle acceleration makes use of sub-picosecond, pulsed, high-power laser systems, capable of producing intensities ~10^{19} W/cm^2 at the laser focus to form plasmas, and use ultra-relativistic and nonlinear dynamics to produce quasistatic acceleration fields. This allows electrons …