Scaling formula of ICF ignition targets and study of targets optimized in stability performance
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摘要: 激光等离子体相互作用（LPI）和瑞利-泰勒流体不稳定性（RTI）是影响间接驱动惯性约束聚变成功的两个主要不确定性因素。点火黑腔内环激光通道在靠近黑腔壁的区域是内环激光SRS背反产生与发展的主要区域。内环通道在该区域满足通道内外压力平衡和能量平衡条件。据此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。结合描述靶丸内爆飞行阶段物理以及内爆性能的两个定标关系，提出了描述稳定性相对性能的指标。该指标可以指导点火靶设计，为LPI和RTI提供需要的裕量空间，是点火阈值因子（ITF）的补充。
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关键词:
- 惯性约束聚变 /
- 激光等离子体相互作用 /
- 瑞利-泰勒不稳定性 /
- 等离子体定标关系 /
- 点火靶设计
Abstract: Laser and plasma interaction (LPI) and Rayleigh-Taylor instability (RTI) are two main ingredients affecting the success of ignition. The gas fill near the Au wall along the inner laser cone is the main region where SRS instabilities occur. 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 is developed. Considering the scaling formula in capsule, an index is proposed which describes the stability performance. Designing of ignition targets is directed by using this index to obtain more margin for LPI and RTI. -
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