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Controlled acceleration of GeV electron beams in an all-optical plasma waveguide.
Light Sci Appl
June 2022
LOA, CNRS, Ecole Polytechnique, ENSTA Paris, Institut Polytechnique de Paris, 181 Chemin de la Hunière et des Joncherettes, 91120, Palaiseau, France.
Laser-plasma accelerators (LPAs) produce electric fields of the order of 100 GV m, more than 1000 times larger than those produced by radio-frequency accelerators. These uniquely strong fields make LPAs a promising path to generate electron beams beyond the TeV, an important goal in high-energy physics. Yet, large electric fields are of little benefit if they are not maintained over a long distance.
View Article and Find Full Text PDFExperimental platform for investigations of high-intensity laser plasma interactions in the magnetic field of a pulsed power generator.
Rev Sci Instrum
March 2018
Department of Physics, University of Nevada, Reno, Nevada 89557, USA.
An experimental platform for the studying of high-intensity laser plasma interactions in strong magnetic fields has been developed based on the 1 MA Zebra pulsed power generator coupled with the 50-TW Leopard laser. The Zebra generator produces 100-300 T longitudinal and transverse magnetic fields with different types of loads. The Leopard laser creates plasma at an intensity of 10 W/cm in the magnetic field of coil loads.
View Article and Find Full Text PDFHow does the Earth system generate and maintain thermodynamic disequilibrium and what does it imply for the future of the planet?
Philos Trans A Math Phys Eng Sci
March 2012
Biospheric Theory and Modelling Group, Max-Planck-Institut für Biogeochemie, Hans-Knöll-Strasse 10, 07745 Jena, Germany.
The Earth's chemical composition far from chemical equilibrium is unique in our Solar System, and this uniqueness has been attributed to the presence of widespread life on the planet. Here, I show how this notion can be quantified using non-equilibrium thermodynamics. Generating and maintaining disequilibrium in a thermodynamic variable requires the extraction of power from another thermodynamic gradient, and the second law of thermodynamics imposes fundamental limits on how much power can be extracted.
View Article and Find Full Text PDFComment on "Generation of 10(11) contrast 50 TW laser pulses".
Opt Lett
October 2006
Laboratoire d'Optique Appliquée, ENSTA-Ecole Polytechnique-CNRS, 91761 Palaíseau Cedex, France.
We argue for a different physical interpretation of the results given in the recent Letter by Chvykov et al. [Opt. Lett.
View Article and Find Full Text PDFGeneration of 10(11) contrast 50 TW laser pulses.
Opt Lett
May 2006
Center for Ultrafast Optical Sciences, University of Michigan, Ann Arbor 48109-2099, USA.
We demonstrate what we believe to be the highest-contrast (10(11)), multiterawatt, chirped-pulse amplification (CPA) Ti:sapphire laser by applying the modified cross-polarized-wave (XPW) generation method. This method produces a contrast improvement of 3 orders of magnitude using microjoule input energy. Microjoule energy can be achieved by direct amplification without the complications of a double CPA system.
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