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21Complex Systems of Charged Particles and their Interactions with Electromagnetic Radiation 2019
STUDY OF BLAST WAVES GENERATED BY SHORT-PULSE HIGH-
INTENSITY LASERS IN SOLIDS
1 2 1 2 11 D. Batani1, K. Jakubowska2, J.-F. Feugeas1, P. Forestier-Colleoni2, S. Hulin1, P. Nicolai1, A.
Flacco2, B. Vauzour2, V. Malka2, J.J. Santos1
Universite Bordeaux, CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), France
e-mail: dimitri.batani@u-bordeaux.fr 2 Institute of Plasma Physics and Laser Microfusion, Warsaw, Poland e-mail: k.jakubowska2@gmail.com 3LOA (ENSTA/CNRS/Ecole Polytechnique), France, e-mail: victor. malka@ensta-paristech.fr
The study of extreme states of matter at high temperature and high pressure are interesting for many fields from planetology and astrophysics up to inertial fusion. Usually such states of matter are created by using high-energy ns-duration laser pulses creating shock waves which compress and heat the material to be studied.
In this talk, we present the results from experiments [1,2] in which extreme states of matter are created by short-pulse high-intensity lasers creating blast waves in solid density matter.
Typically, experiments were performed using ultra-short (~a few 10 fs) and low -energy (J) laser pulse, following the energy deposition in the target by fast electrons. Due to the short duration of the pulse, this shock is not supported in time and takes the form of a blast wave travelling in the solid material. For a target with 50p,m thickness we have clearly inferred the generation of pressure >1DDMbar.
We also show that such blast wave can be used to provide information on compressed matter. We have measured the colour temperature of the emitting target rear side at breakout time ^(TD.6 eV), which resulted in good agreement with predictions from equation-of-state models (SESAME tables) and hydrodynamic simulations.
References
[1] K. Jakubowska, et al. Europhysics Letters, 119, 35001 (2017)
[2] J.J.Santos, et al. New J. Phys. 19, 103005 (2017)
