Plasma and Fusion Research

Volume 4, 044 (2009)

Review Articles

Recent Laboratory Astrophysics Experiments at LULI
Michel KOENIG1), Claire MICHAUT3), Bérénice LOUPIAS1,2), Emeric FALIZE2,3), Chris GREGORY1), Yasuhiro KURAMITSU8), Seiichi DONO8), Tommaso VINCI1,2), Jonny WAUGH4), Nigel WOOLSEY4), Norimasa OZAKI5), Alessandra BENUZZI-MOUNAIX1), Alessandra RAVASIO1), Serge BOUQUET2,3), Marc Rabec le GOAHEC1), Wigen NAZAROV6), Serguey PIKUZ7), Youichi SAKAWA8), Hideaki TAKABE8) and Ryosuke KODAMA5)
1)
LULI, Ecole Polytechnique, CNRS, CEA, UPMC, Route de Saclay, 91128 Palaiseau, France
2)
CEA-DIF, 91297 Arpajon, France
3)
LUTH, Observatoire de Paris, CNRS, Universit’e Paris-Diderot, 92190 Meudon, France
4)
Department of Physics, University of York, York, YO10 5DD, U.K.
5)
Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
6)
School of Chemistry, University of St Andrews, Purdie Blg, St Andrews KY16 9ST, United Kingdom
7)
Joint Institute for High Temperatures of RAS, Izhorskaya 13/19, Moscow, 125412, Russia
8)
Institute of Laser Engineering, Osaka University, 2-6 Yamadaoka, Suita, 565-0871, Japan
(Received 16 January 2009 / Accepted 16 March 2009 / Published 24 September 2009)

Abstract

At the LULI laboratory we developed since a few years a program on several topics related to laboratory astrophysics: high velocity jets, shock waves in density gradients, collisionless shocks, and radiative shocks (RS). In this paper, the latest experiments related to RS’s obtained on the new LULI2000 facility and on GEKKOXII are presented. In particular a strong radiative precursor was observed and its time evolution compared with 2D radiative simulations. The second topic developed at LULI is related to plasma jets which are often observed in Young Stellar Objects (YSO), during their phase of bulk contraction. They interact with the interstellar medium resulting in emission lobes, including the so-called bow shocks. The objective of our experiments was to generate plasma jets propagating through an ambient medium. To this aim, we developed a new target design (a foam filled cone ended with a “nozzle”) in order to generate a plasma jet. A jet-like structure was observed and its time evolution studied by varying the foam density. Interaction with ambient medium was recently performed showing growing instabilities for low density gas.

Keywords

laser-plasma interaction, laboratory astrophysics, radiative hydrodynamics, shock, jet

DOI: 10.1585/pfr.4.044

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This paper may be cited as follows:

Michel KOENIG, Claire MICHAUT, Bérénice LOUPIAS, Emeric FALIZE, Chris GREGORY, Yasuhiro KURAMITSU, Seiichi DONO, Tommaso VINCI, Jonny WAUGH, Nigel WOOLSEY, Norimasa OZAKI, Alessandra BENUZZI-MOUNAIX, Alessandra RAVASIO, Serge BOUQUET, Marc Rabec le GOAHEC, Wigen NAZAROV, Serguey PIKUZ, Youichi SAKAWA, Hideaki TAKABE and Ryosuke KODAMA, Plasma Fusion Res. 4, 044 (2009).