Numerical study of the advanced target design for FIREX-I

被引:8
|
作者
Nagatomo, H. [1 ]
Johzaki, T. [1 ]
Sakagami, H. [2 ]
Sentoku, Y. [3 ]
Sunahara, A. [4 ]
Taguchi, T. [5 ]
Shiraga, H. [1 ]
Azechi, H. [1 ]
Mima, K. [1 ]
机构
[1] Osaka Univ, Inst Laser Engn, Suita, Osaka 5650871, Japan
[2] Natl Inst Fus Sci, Dept Simulat Sci, Toki, Gifu 5095292, Japan
[3] Univ NV, Dept Phys, Reno, NV USA
[4] Inst Laser Technol, Suita, Osaka 5650871, Japan
[5] Setsunan Univ, Dept Elect & Elect Engn, Osaka 5728508, Japan
关键词
IGNITION; PLASMA;
D O I
10.1088/0029-5515/49/7/075028
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 fast ignition (FI) scheme, at first high density fuel core plasma is assembled by an implosion laser and then heated by a peta watt laser to achieve the fusion burning condition. A typical target for FI is a shell fitted with a re-entrant Au cone to keep a path for the heating laser clean. Recently, for the FIREX-I scale size experiment, the CH tip of the guiding cone has advantages from the viewpoint of the generation of hot electrons and hot electron transport. As a result, from the viewpoint of implosion dynamics, cone-guided implosion with the CH tip is studied using the two-dimensional radiation hydrodynamic code. Two shockwaves caused by the leading shock of implosion and jet from the core determine the breakup time of the tip. With a sophisticated target and laser pulse shape design, CH, CD or other low-Z material tips will be realized without breaking up the cone tip before the maximum compression timing and debasement of the implosion performance.
引用
收藏
页数:6
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