点火黑腔等离子体定标关系及350 eV靶黑腔设计  

Plasma scaling in ignition hohlraums and a 350 eV hohlraum design

作　　者：李欣[1] 郝亮[1] 郑无敌[1] 葛峰俊 

机构地区：[1]北京应用物理与计算数学研究所,北京100071

出　　处：《强激光与粒子束》2014年第8期142-147,共6页High Power Laser and Particle Beams

基　　金：国家高技术研究发展计划项目;国家自然科学基金项目(11305014)

摘　　要：点火黑腔内环激光通道内靠近黑腔壁的区域是内环激光受激拉曼散射(SRS)背向散射产生与发展的主要区域。根据内环通道在该区域满足通道内外压力平衡和能量平衡,提出了间接驱动惯性约束聚变点火黑腔等离子体定标关系。该定标关系在一定程度上统筹考虑靶丸性能、激光器指标和激光等离子体相互作用(LPI)。在此基础上,根据靶丸抑制流体不稳定的需求,提出了一个350eV点火黑腔设计,该设计可以较好地抑制内环LPI的发展,并对激光器设计提出了更高的要求。The gas fill near the Au wall along the inner laser cone is the main region which stimulates SRS instabilities. At this region, pressure balance and energy balance between the inside and the outside of inner laser cone path are obtained. A plas- ma scaling model in ignition hohlraum of ICF has been developed. Capsule performance, laser facility parameters, and laser-plas- ma interaction（LPI） physics are related by this scaling model. A 350 eV ignition hohlraum design is proposed according to the model. Compared with the designs published before, this design could reduce LPI development of inner laser cones better, but put forward more pressure on laser facility design.

关 键 词：间接驱动惯性约束聚变 激光等离子体相互作用 等离子体定标关系 点火黑腔设计 

分 类 号：O532.13[理学—等离子体物理]