8-12 July 2019
Cité des Congrès
Europe/Paris timezone

Well-controlled near-critical plasmas from supersonic gas jets for enhanced ion acceleration by ultra-intense laser interaction

10 Jul 2019, 15:15
25m
Salle KL (Cité des Congrès)

Salle KL

Cité des Congrès

Speaker

Mrs Valeria Ospina (1) Université de Bordeaux, CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), UMR 5107, Talence, France 2) CEA-DAM/DIF, CEA/DAM Île-de-France, Arpajon, France 3) C.L.P.U. (Centro de Láseres Pulsados), Salamanca, Spain)

Description

Efficient electron heating and enhanced ion acceleration by ultra-intense laser interaction with well-controlled near-critical plasmas were predicted numerically but remained relatively unexplored owing to the difficulty of creating such type of targets. We studied this regime on the CLPU VEGA-2 200TW laser facility (6J, 30fs, at 10^21W/cm2) with state-of-the-art pressure-boosted supersonic gas jets from CELIA.
The interest in compact high-repetition rate ion sources with high energy-density at ultra-low emittance stems from many potential applications, including proton radiography, time-resolved probing of ultrafast laser-induced phenomena, fast ignition, nuclear physics and medical applications. Most of these applications require a particle flux which may greatly surpass those attained on standard radio-frequency accelerators.
Our gas jets issue from novel shock nozzles with carefully adapted spatial density profiles that have a high temporal ms-scale stability. Employing different gases, namely N2, He and mixtures of both, the resulting jets are characterized by a maximum free electron density of ≈10^21/cc after laser-induced ionization.
Such experimental conditions may be prone to driving collisionless electrostatic shocks with PW-level ultra-short laser pulses. We will show first preliminary results already obtained at the 200TW level, regarding the accelerated species detected on radiochromic films, CR-39 and a pair of PIN-diodes.

Choix de session parallèle 4.1 Plasmas et accélérateurs: état de l'art et machines du futur 1

Primary author

Mrs Valeria Ospina (1) Université de Bordeaux, CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), UMR 5107, Talence, France 2) CEA-DAM/DIF, CEA/DAM Île-de-France, Arpajon, France 3) C.L.P.U. (Centro de Láseres Pulsados), Salamanca, Spain)

Co-authors

Michael EHRET (IKP TU-Darmstadt // CELIA U-Bordeaux) Mr Carlos Salgado (C.L.P.U. (Centro de Láseres Pulsados), Salamanca, Spain) Mr J.A. Perez-Hernández (C.L.P.U. (Centro de Láseres Pulsados), Salamanca, Spain) Mrs Marine Huault (C.L.P.U. (Centro de Láseres Pulsados), Salamanca, Spain) Mr Massimo de Marco (C.L.P.U. (Centro de Láseres Pulsados), Salamanca, Spain) Mr Jon Apiñaniz (C.L.P.U. (Centro de Láseres Pulsados), Salamanca, Spain) Fazia Hannachi (CENBG, CNRS-IN2P3, Université de Bordeaux, Gradignan, France) D. de Luis (C.L.P.U. (Centro de Láseres Pulsados), Salamanca, Spain) Mr J. Hernández Toro (C.L.P.U. (Centro de Láseres Pulsados), Salamanca, Spain) Mrs C. Méndez (C.L.P.U. (Centro de Láseres Pulsados), Salamanca, Spain) Mr J.D. Pisonero (C.L.P.U. (Centro de Láseres Pulsados), Salamanca, Spain) Mr O. Varela (C.L.P.U. (Centro de Láseres Pulsados), Salamanca, Spain) Mr A. Debayle (CEA-DAM/DIF, CEA/DAM Île-de-France, Arpajon, France) Mr Emmanuel d’Humières (Université de Bordeaux, CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), UMR 5107, Talence, France) Mr L. Gremillet (CEA-DAM/DIF, CEA/DAM Île-de-France, Arpajon, France) T.-H. Nguyen-Bui (Université de Bordeaux, CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), UMR 5107, Talence, France) Mr E. Olivier (Université de Bordeaux, CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), UMR 5107, Talence, France) Mr G. Revet (Université de Bordeaux, CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), UMR 5107, Talence, France) Mr Christian Brabetz (Plasma Physik/PHELIX, GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany) J. Caron (Université de Bordeaux, CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), UMR 5107, Talence, France) Mr T. Ceccotti (CEA/IRAMIS, SPAM, Gif-sur-Yvette, France) Mr R. Nuter (Université de Bordeaux, CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), UMR 5107, Talence, France) Mr Didier Raffestin (Université de Bordeaux, CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), UMR 5107, Talence, France) Mr Markus Roth (Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany) Mr Xavier Vaisseau (C.L.P.U. (Centro de Láseres Pulsados), Salamanca, Spain) Mr G. Gatti (C.L.P.U. (Centro de Láseres Pulsados), Salamanca, Spain) Mr Luca Volpe (C.L.P.U. (Centro de Láseres Pulsados), Salamanca, Spain) Mr J.J. Santos (Université de Bordeaux, CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), UMR 5107, Talence, France)

Presentation Materials

There are no materials yet.