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Generation of hot and dense plasmas in laser accelerated colliding foil systems

Published online by Cambridge University Press:  16 October 2009

P. Angelo ,
H. Derfoul ,
P. Gauthier ,
P. Sauvan ,
A. Poquerusse ,
T. Ceccotti ,
E. Leboucher-Dalimier ,
T. Shepard ,
C. Back  and
M. Vollbrecht
...Show all authors
P. Angelo
Affiliation:
Physique Atomique dans les Plasmas Denses, LULI, CNRS, Ecole Polytechnique, 91128 Palaiseau cedex, France; and Université Paris VI, 4 place Jussieu, 75252 Paris cedex 05, France
H. Derfoul
Affiliation:
Physique Atomique dans les Plasmas Denses, LULI, CNRS, Ecole Polytechnique, 91128 Palaiseau cedex, France; and Université Paris VI, 4 place Jussieu, 75252 Paris cedex 05, France
P. Gauthier
Affiliation:
Physique Atomique dans les Plasmas Denses, LULI, CNRS, Ecole Polytechnique, 91128 Palaiseau cedex, France; and Université Paris VI, 4 place Jussieu, 75252 Paris cedex 05, France
P. Sauvan
Affiliation:
Physique Atomique dans les Plasmas Denses, LULI, CNRS, Ecole Polytechnique, 91128 Palaiseau cedex, France; and Université Paris VI, 4 place Jussieu, 75252 Paris cedex 05, France
A. Poquerusse
Affiliation:
Physique Atomique dans les Plasmas Denses, LULI, CNRS, Ecole Polytechnique, 91128 Palaiseau cedex, France; and Université Paris VI, 4 place Jussieu, 75252 Paris cedex 05, France
T. Ceccotti
Affiliation:
Physique Atomique dans les Plasmas Denses, LULI, CNRS, Ecole Polytechnique, 91128 Palaiseau cedex, France; and Université Paris VI, 4 place Jussieu, 75252 Paris cedex 05, France
E. Leboucher-Dalimier
Affiliation:
Physique Atomique dans les Plasmas Denses, LULI, CNRS, Ecole Polytechnique, 91128 Palaiseau cedex, France; and Université Paris VI, 4 place Jussieu, 75252 Paris cedex 05, France
T. Shepard
Affiliation:
Lawrence Livermore National Laboratory, University of California, USA
C. Back
Affiliation:
Lawrence Livermore National Laboratory, University of California, USA
M. Vollbrecht
Affiliation:
MPG Research Unit X-ray Optics, Friedrich Schiller Universität, Jena, Germany
I. Uschmann
Affiliation:
MPG Research Unit X-ray Optics, Friedrich Schiller Universität, Jena, Germany
E. Förster
Affiliation:
MPG Research Unit X-ray Optics, Friedrich Schiller Universität, Jena, Germany
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Extract

We create hot (Te > 200 eV) and dense (Ne > 1023 cm−3) plasmas in the colliding zone of two thin foils accelerated by two laser beams of the LULI facilities. Three spectroscopic diagnostics (two 1D space-resolved spectrographs and a 2D monochromatic imaging) are used to drive the efficiency of the compression. We show that 2D effects are important. Realistic simulations of these experiments must be done, taking into account the inhomogeneity of the laser intensity in the focal spot, the foil distorsion, the plasma lateral expansion, and the lateral thermal conduction. Two-dimensional LASNEX code results are in good agreement with our experimental results. The optimized compressed plasmas generated are favorable for the exhibition of dense plasma effects due to molecular formations, and they reproduce in laboratory some astrophysical situations.

Type
Research Article
Information
Laser and Particle Beams , Volume 16 , Issue 1: Special Issue: 24th ECLIM , March 1998 , pp. 21 - 30
Copyright
Copyright © Cambridge University Press 1998

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