Fused Silica Final Optics for Inertial Fusion Energy: Radiation Studies and System-Level Analysis
Fused Silica Final Optics for Inertial Fusion Energy: Radiation Studies and System-Level Analysis
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用于惯性聚变能的熔融石英最终光学器件：辐射研究和系统级分析
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
S. Payne
中科院分区：
文献类型：
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作者：
J. Latkowski;A. Kubota;M. Caturla;S. Dixit;J. Speth;S. Payne
最终光学元件必须位于高能中子和伽马射线的视线内，其生存能力是任何激光驱动惯性聚变能（IFE）概念的关键问题。以前的工作集中在使用反射光学。在这里，我们介绍和分析使用的最终光学IFE应用的透射。我们的实验工作是在一系列剂量和剂量率下进行的，包括那些与IFE最终光学条件相当的情况。实验工作，结合详细的分析，表明薄，熔融石英菲涅尔透镜可能是一个有吸引力的选择时，在351 nm的波长使用。我们的测量和分子动力学模拟提供了令人信服的证据，辐射损伤，这导致光吸收，不仅饱和，但观察到的“辐射退火”效应。提供了系统级描述，包括菲涅耳透镜和相位板设计。
The survivability of the final optic, which must sit in the line of sight of high-energy neutrons and gamma rays, is a key issue for any laser-driven inertial fusion energy (IFE) concept. Previous work has concentrated on the use of reflective optics. Here, we introduce and analyze the use of a transmissive final optic for the IFE application. Our experimental work has been conducted at a range of doses and dose rates, including those comparable to the conditions at the IFE final optic. The experimental work, in conjunction with detailed analysis, suggests that a thin, fused silica Fresnel lens may be an attractive option when used at a wavelength of 351 nm. Our measurements and molecular dynamics simulations provide convincing evidence that the radiation damage, which leads to optical absorption, not only saturates but that a “radiation annealing” effect is observed. A system-level description is provided, including Fresnel lens and phase plate designs.