High-gain direct-drive target design for the Laser Megajoule

被引：49
作者：
Canaud, B
Fortin, X
Garaude, F
Meyer, C
Philippe, F
Temporal, M
Atzeni, S
Schiavi, A
机构：
[1] CEA, DAM, Dept Phys Theor & Appl, F-91680 Bruyeres Le Chatel, France
[2] Univ Castilla La Mancha, ETSIL, E-13071 Ciudad Real, Spain
[3] Univ Roma La Sapienza, Dipartimento Energet, I-00161 Rome, Italy
[4] INFM, I-00161 Rome, Italy
来源：
NUCLEAR FUSION | 2004年 / 44卷 / 10期
关键词：
D O I：
10.1088/0029-5515/44/10/005
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
In the context of the French Laser-Megajoule fusion-research programme, a direct-drive target design is developed. It is based on the use of a CH-foam ablator filled with cryogenic deuterium-tritium. One-dimensional optimization leads to a potential gain of 60 with a 1.5 MJ laser. The hydrodynamic stability of the implosion is investigated at the ablation front and the hot-spot surface by means of modelling and two-dimensional simulations. The effect of irradiation non-uniformities on low-mode (time-dependent) implosion asymmetries is studied by two-dimensional hydrodynamics simulations with three-dimensional laser-light raytracing. The effect of beam focal shapes on hot spot low-mode asymmetries is also addressed.
引用
收藏
页码：1118 / 1129
页数：12
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