强激光与粒子束, 2014, 26 (8): 082005, 网络出版: 2014-07-30
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
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 inertial confinement fusion laser-plasma interaction plasma scaling ignition hohlraum design
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350 eV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。
Abstract
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 plasma scaling model in ignition hohlraum of ICF has been developed. Capsule performance, laser facility parameters, and laser-plasma 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.
李欣, 郝亮, 郑无敌, 葛峰俊. 点火黑腔等离子体定标关系及350 eV靶黑腔设计[J]. 强激光与粒子束, 2014, 26(8): 082005. Li Xin, Hao Liang, Zheng Wudi, Ge Fengjun. Plasma scaling in ignition hohlraums and a 350 eV hohlraum design[J]. High Power Laser and Particle Beams, 2014, 26(8): 082005.
PDF全文
