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Experimental results to study astrophysical plasma jets using Intense Lasers |
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| Authors: | B Loupias C D Gregory E Falize J Waugh D Seiichi S Pikuz Y Kuramitsu A Ravasio S Bouquet C Michaut P Barroso M Rabec le Gloahec W Nazarov H Takabe Y Sakawa N Woolsey M Koenig |
| Institution: | 1. LULI, Ecole Polytechnique, CNRS, CEA, UPMC, Route de Saclay, 91128, Palaiseau, France 2. CEA-DAM-DIF, BP 12 91680, Arpagon, France 3. Laboratoire de l’Univers et de ses Théories, UMR8102, Observatoire de Paris, 92195, Meudon, France 5. Department of Physics, University of York, York, YO10 5DD, UK 6. Institute of Laser Engineering, Osaka University, 2-6 Yamadaoka, Suita, 565-0871, Japan 7. Joint Institute for High Temperatures of RAS, Izhorskaya 13/19, Moscow, 125412, Russia 4. GEPI, Observatoire de Paris, CNRS, Universite Paris Diderot, Place Jules Janssen, 92190, Meudon, France 8. School of Chemistry, University of St. Andrews, North Haugh, St. Andrews, UK |
| Abstract: | We present experimental results of plasma jet, interacted with an ambient medium, using intense lasers to investigate the complex features of astrophysical jets. This experiment was performed in France at the LULI facility, Ecole Polytechnique, using one long pulse laser to generate the jet and a short pulse laser to probe it by proton radiography. A foam filled cone target was used to generate high velocity plasma jet, and a gas jet nozzle produced the well known ambient medium. Using visible pyrometry and interferometry, we were able to measure the jet velocity and electronic density. We get a panel of measurements at various gas density and time delay. From these measurements, we could underline the growth of a perturbed shape of the jet interaction with the ambient medium. The reason of this last observation is still in debate and will be presented in the article. |
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