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雷利-泰勒模型对直接驱动激光聚变的应用

C A Thomas¹, M J Rosenberg¹, W Theobald^1,2

¹Laboratory for Laser Energetics, , Rochester, New York 14623, USA.

Physical review. E

|November 20, 2024

概括

一个新的物理模型简化了激光直接驱动分析,使用目标尺度,面积比和光束半径. 这种模型准确地预测了核聚变产量和面积密度,为直接驱动爆破提供了新的方法.

科学领域:

等离子体物理学的物理学
核聚变能源的使用方式
激光与等离子体相互作用

背景情况:

激光直接驱动 (LDD) 是一个有前途的惯性封闭融合方法.
准确预测关键绩效指标对于LDD成功至关重要.
了解水力动力学稳定性对于高效的爆破至关重要.

研究的目的:

开发一个基于物理的简化模型来解释LDD性能.
量化目标尺度的影响,飞行时的尺寸比,以及光束到目标半径.
为了确定优化直接驱动器爆破的新策略.

主要方法:

使用基于物理的模型,输入参数最小.
通过冷式爆破实验量化参数的重要性.
分析了水力动力学稳定性和混合宽度行为.

主要成果:

开发了一个紧而准确的模型来预测核聚变产量和面积密度.
证明了模型能够指导爆破设计的能力.
在LDD的OMEGA激光器上确定了一个新的参数空间.

结论:

该模型为LDD分析和优化提供了一个强大的工具.
新的见解建议利用特定的参数制度来提高性能.
使用拟议的方法,预计点火时的激光能量 ≤2.0 MJ.

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