在超高激光能量下对称的惯性束聚变爆发
S H Glenzer1, B J MacGowan, P Michel
1Lawrence Livermore National Laboratory, Post Office Box 808, Livermore, CA 94551, USA. glenzer1@llnl.gov
Science (New York, N.Y.)
|January 30, 2010
概括
研究人员使用0.7兆焦耳的激光能量实现了对称的囊爆裂. 在惯性封闭聚变实验中的这一突破为控制的聚变等离子体和实验室能量增益铺平了道路.
科学领域:
- 核聚变是一种核聚变.
- 等离子体物理学的物理学
- 高能量密度物理学 高能量密度物理学
背景情况:
- 间接驱动惯性封闭核聚变 (ICF) 是实现可控核聚变的关键方法.
- 之前的实验重点是增加激光驱动能量的增加,以提高爆破对称性和性能.
研究的目的:
- 为了证明在前所未有的激光驱动能量下对称的囊爆炸.
- 评估当前的实验条件是否适合实现燃烧的聚变等离子体.
主要方法:
- 利用国家点火设施的间接驱动空洞空间实验.
- 采用192个同时发射的激光束来加热点火 - - 以330万凯尔文的温度模拟洞房.
- 使用自生成的等离子光学网格调整激光功率分配对称的X射线驱动器.
主要成果:
- 在0.7兆焦勒的激光驱动能量下实现了对称的囊爆炸.
- 从囊自我发射的形状推断出对称的X射线驱动器.
- 在洞空间内展示了对激光功率分布的精确控制.
结论:
- 实验条件适合压缩用三填充的囊.
- 这些结果代表了在实验室环境中实现燃烧聚变等离子体和能量增益的重要一步.
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