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Progress in inertial confinement fusion physics at Centre d'Etudes de Limeil-Valenton

Published online by Cambridge University Press:  09 March 2009

M. André ,
D. Babonneau ,
C. Bayer ,
M. Bernard ,
J-L. Bocher ,
J. Bruneau ,
A. Coudeville ,
J. Coutant ,
R. Dautray  and
A. Decoster
...Show all authors
M. André
Affiliation:
Commissariat à l'Energie Atomique, Centre d'Etudes de Limeil-Valenton, 94195 Villeneuve Saint-Georges (Cedex, France)
D. Babonneau
Affiliation:
Commissariat à l'Energie Atomique, Centre d'Etudes de Limeil-Valenton, 94195 Villeneuve Saint-Georges (Cedex, France)
C. Bayer
Affiliation:
Commissariat à l'Energie Atomique, Centre d'Etudes de Limeil-Valenton, 94195 Villeneuve Saint-Georges (Cedex, France)
M. Bernard
Affiliation:
Commissariat à l'Energie Atomique, Centre d'Etudes de Limeil-Valenton, 94195 Villeneuve Saint-Georges (Cedex, France)
J-L. Bocher
Affiliation:
Commissariat à l'Energie Atomique, Centre d'Etudes de Limeil-Valenton, 94195 Villeneuve Saint-Georges (Cedex, France)
J. Bruneau
Affiliation:
Commissariat à l'Energie Atomique, Centre d'Etudes de Limeil-Valenton, 94195 Villeneuve Saint-Georges (Cedex, France)
A. Coudeville
Affiliation:
Commissariat à l'Energie Atomique, Centre d'Etudes de Limeil-Valenton, 94195 Villeneuve Saint-Georges (Cedex, France)
J. Coutant
Affiliation:
Commissariat à l'Energie Atomique, Centre d'Etudes de Limeil-Valenton, 94195 Villeneuve Saint-Georges (Cedex, France)
R. Dautray
Affiliation:
Commissariat à l'Energie Atomique, Centre d'Etudes de Limeil-Valenton, 94195 Villeneuve Saint-Georges (Cedex, France)
A. Decoster
Affiliation:
Commissariat à l'Energie Atomique, Centre d'Etudes de Limeil-Valenton, 94195 Villeneuve Saint-Georges (Cedex, France)
M. Decroisette
Affiliation:
Commissariat à l'Energie Atomique, Centre d'Etudes de Limeil-Valenton, 94195 Villeneuve Saint-Georges (Cedex, France)
D. Desenne
Affiliation:
Commissariat à l'Energie Atomique, Centre d'Etudes de Limeil-Valenton, 94195 Villeneuve Saint-Georges (Cedex, France)
J-M. Dufour
Affiliation:
Commissariat à l'Energie Atomique, Centre d'Etudes de Limeil-Valenton, 94195 Villeneuve Saint-Georges (Cedex, France)
J-P. Garçonnet
Affiliation:
Commissariat à l'Energie Atomique, Centre d'Etudes de Limeil-Valenton, 94195 Villeneuve Saint-Georges (Cedex, France)
P-A. Holstein
Affiliation:
Commissariat à l'Energie Atomique, Centre d'Etudes de Limeil-Valenton, 94195 Villeneuve Saint-Georges (Cedex, France)
J-P. Jadaud
Affiliation:
Commissariat à l'Energie Atomique, Centre d'Etudes de Limeil-Valenton, 94195 Villeneuve Saint-Georges (Cedex, France)
A. Jolas
Affiliation:
Commissariat à l'Energie Atomique, Centre d'Etudes de Limeil-Valenton, 94195 Villeneuve Saint-Georges (Cedex, France)
D. Juraszek
Affiliation:
Commissariat à l'Energie Atomique, Centre d'Etudes de Limeil-Valenton, 94195 Villeneuve Saint-Georges (Cedex, France)
J. Lachkar
Affiliation:
Commissariat à l'Energie Atomique, Centre d'Etudes de Limeil-Valenton, 94195 Villeneuve Saint-Georges (Cedex, France)
P. Lascaux
Affiliation:
Commissariat à l'Energie Atomique, Centre d'Etudes de Limeil-Valenton, 94195 Villeneuve Saint-Georges (Cedex, France)
J-P. Le Breton
Affiliation:
Commissariat à l'Energie Atomique, Centre d'Etudes de Limeil-Valenton, 94195 Villeneuve Saint-Georges (Cedex, France)
M. Louis-Jacquet
Affiliation:
Commissariat à l'Energie Atomique, Centre d'Etudes de Limeil-Valenton, 94195 Villeneuve Saint-Georges (Cedex, France)
B. Meyer
Affiliation:
Commissariat à l'Energie Atomique, Centre d'Etudes de Limeil-Valenton, 94195 Villeneuve Saint-Georges (Cedex, France)
F. Mucchielli
Affiliation:
Commissariat à l'Energie Atomique, Centre d'Etudes de Limeil-Valenton, 94195 Villeneuve Saint-Georges (Cedex, France)
C. Rousseaux
Affiliation:
Commissariat à l'Energie Atomique, Centre d'Etudes de Limeil-Valenton, 94195 Villeneuve Saint-Georges (Cedex, France)
D. Schirmann
Affiliation:
Commissariat à l'Energie Atomique, Centre d'Etudes de Limeil-Valenton, 94195 Villeneuve Saint-Georges (Cedex, France)
G. Schurtz
Affiliation:
Commissariat à l'Energie Atomique, Centre d'Etudes de Limeil-Valenton, 94195 Villeneuve Saint-Georges (Cedex, France)
D. Véron
Affiliation:
Commissariat à l'Energie Atomique, Centre d'Etudes de Limeil-Valenton, 94195 Villeneuve Saint-Georges (Cedex, France)
J-P. Watteau
Affiliation:
Commissariat à l'Energie Atomique, Centre d'Etudes de Limeil-Valenton, 94195 Villeneuve Saint-Georges (Cedex, France)
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Abstract

The laser program developed at the Centre d'Etudes de Limeil-Valenton, Saint-Georges, France (CEL-V) is concentrated on a systematic investigation of indirect drive fusion; by comparison with direct drive, this process is expected to provide the required irradiation uniformity with relaxed constraints on laser beam quality. The main concerns are radiative transfer and preheat, hydrodynamic instabilities, and high-density X-ray driven implosions. Ablative implosion experiments have been conducted with the two beams at the Phebus facility (5 kJ, 1.3 ns, 0.35 μm). Symmetry was proved to be controlled by the casing structure, following scaling laws describing hohlraum physics. A compressed DT density ∼100 ρ0 (ρ0 liquid DT density) has been deduced from activation measurements. Different aspects of the soft X-ray transfer processes, and particularly of the ablation of a low-Z material, which drives the capsule implosion, are dealt with in detailed investigations. Reported here are results on X-ray reemission and penetration in several materials, and on induced hydrodynamics of accelerated foils. The laser energy required to reach fuel ignition conditions has been evaluated from numerical simulations as well as from analytical models, taking into account hohlraum physics, capsule implosion, hot spot formation, and burn propagation. Several crucial parameters have been drawn, the most important being the radiation temperature. A target gain in the order of 10 appears achievable with a 2-MJ laser.

Type
Research Article
Information
Laser and Particle Beams , Volume 12 , Issue 3 , September 1994 , pp. 329 - 342
Copyright
Copyright © Cambridge University Press 1994

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