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The acceleration of electrons from ultra-thin foils using high-intensity lasers has recently gained high interest due to the outstanding characteristics of the generated electron beam observed in particle-in-cell simulations. Here, the generation of a relativistic electron bunch of ultra-high density was demonstrated which may be well-suited for the generation of ultra-short coherent x-ray radiation...
The high contrast front-end for the 200 TW Trident laser has shown in recent experiments the importance roles that Amplified Spontaneous Emission (ASE) and prepulse contrast play in laser-ion acceleration. Ion energies above 58 MeV with efficiencies of greater than 5% into ions above 4 MeV have been observed. Scalings for, laser energy, intensity, and target thickness are presented and compared to...
Summary form only given. Results from experiments performed at the recently commissioned LANL 200 TW Trident short-pulse laser at ~5??1019 W/cm2 (80-100 J and ~600 fs) are presented. We have conducted laser-ion acceleration experiments comparing flat foils and new Cu micro-cone targets in three separate geometries (flat-top, funnel, and snub-nose) to elucidate the production of hot electrons and ions...
Summary form only given. Laser-driven particle acceleration has been under intense investigation for the last decade and is of particular interest for key applications such as medical physics, fast ignition and inertial confinement fusion. The dominant ion acceleration mechanism is known as target normal sheath acceleration (TNSA); although easy accessible it suffers from a low energy conversion efficiency...
We have compared the acceleration of high-energy ions from the rear surface of thin foils for various prepulse contrast conditions of the ultraintense laser pulse irradiating the targets. The experiments were performed using the Laboratoire pour I'Utilisation des Lasers Intenses 100-TW laser facility with 15-20 J energy pulses of >1018 W/cm2 intensity irradiating aluminum targets of variable thicknesses...
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