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Supersonic plasma jet interaction with gases and plasmas |
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| Authors: | P Nicolaï C Stenz V Tikhonchuk X Ribeyre A Kasperczuk T Pisarczyk L Juha E Krousky K Masek M Pfeifer K Rohlena J Skala J Ullschmied M Kalal D Klir J Kravarik P Kubes P Pisarczyk |
| Institution: | 1. Centre Lasers Intenses et Applications, Université Bordeaux 1-CNRS-CEA, 33405, Talence cedex, France 2. Institute of Plasma Physics and Laser Microfusion, 00-908, Warsaw, Poland 3. Institute of Physics AS CR, Na Slovance 2, 182 21, Prague 8, Czech Republic 4. Institute of Plasma Physics AS CR, Za Slovankou 3, 182 00, Prague 8, Czech Republic 5. FNSPE, Czech Technical University in Prague, Brehova 7, 115 19, Prague 1, Czech Republic 6. FEL, Czech Technical University in Prague, Technicka 2, 166 27, Prague 6, Czech Republic 7. ICS, Warsaw University of Technology, 00-665, Warsaw, Poland |
| Abstract: | The interaction of supersonic plasma jets with dense gases and plasmas has been studied experimentally and theoretically. Collimated plasma jets were generated from the laser pulse interaction with solid targets. The jet propagates with the velocity exceeding 400 km/s and transports the energy of a few kJ/cm2. The interaction of such a jet with an Ar and He gases at various pressures has been studied by using optical and X-ray diagnostics. Qualitative estimates and numerical simulations with a radiative hydrodynamic code explain a sequence of physical processes during the interaction. Experimental and numerical results show that, by changing ambient material, the working surface structure changes from an adiabatic outflow to a radiative cooling jet. The applications of this phenomenon to astrophysical conditions and the inertial confinement fusion are discussed. |
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