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Neutron Imaging for Inertial Confinement Fusion Experiments

机译:惯性约束聚变实验的中子成像

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摘要

Neutron imaging of Inertial Confinement Fusion (ICF) targets provides a powerful tool for understanding the implosion conditions of deuterium and tritium filled targets at Mega-Joule/Tera-Watt scale laser facilities. The primary purpose of imaging ICF targets at that National Ignition Facility (NIF), sited at Lawrence Livermore National Laboratory, Livermore, California, is to determine the asymmetry of the fuel in an imploded ICF target. The image data are then combined with other nuclear information to gain insight into the laser and radiation conditions used to drive the target. This information is requisite to understanding the physics of Inertial Confinement Fusion targets and provides a failure mode diagnostic used to optimize the conditions of experiments aimed at obtaining ignition. We present an overview of neutron aperture imaging including a discussion of image formation and reconstruction, requirements for the future (NIF) neutron imaging systems, a description of current imaging system capabilities, and ongoing work to affect imaging systems capable of meeting future system requirements.
机译:惯性约束聚变(ICF)目标的中子成像提供了一个强大的工具,可用于了解兆焦耳/兆瓦级激光设备中氘和filled填充目标的内爆条件。在位于加利福尼亚州利弗莫尔的劳伦斯·利弗莫尔国家实验室的国家点火设施(NIF)上对ICF目标成像的主要目的是确定内燃ICF目标中燃料的不对称性。然后将图像数据与其他核信息相结合,以深入了解用于驱动目标的激光和辐射条件。该信息对于理解惯性约束聚变目标的物理性质是必不可少的,并且提供了一种故障模式诊断,可用于优化旨在获得点火的实验条件。我们提供了中子孔径成像的概述,包括图像形成和重建,对未来(NIF)中子成像系统的要求,对当前成像系统功能的描述以及影响成像系统能够满足未来系统要求的正在进行的工作。

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