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首页> 外文期刊>Bulletin of the American Physical Society >APS -59th Annual Meeting of the APS Division of Plasma Physics - Event - Reconstruction of Axial Energy Deposition in Magnetic Liner Inertial Fusion Based on PECOS Shadowgraph Unfolds Using the AMR Code FLASH
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APS -59th Annual Meeting of the APS Division of Plasma Physics - Event - Reconstruction of Axial Energy Deposition in Magnetic Liner Inertial Fusion Based on PECOS Shadowgraph Unfolds Using the AMR Code FLASH

机译：APS-等离子体物理APS部门第59届年会-事件-基于PECOS阴影图的磁衬里惯性融合中轴能量沉积的重建，使用AMR代码FLASH展开

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摘要

Magnetic Liner Inertial Fusion (MagLIF) experiments incorporate a laser to preheat a deuterium filled capsule before compression via a magnetically imploding liner. In this work, we focus on the blast wave formed in the fuel during the laser preheat component of MagLIF, where approximately 1kJ of energy is deposited in 3ns into the capsule axially before implosion. To model blast waves directly relevant to experiments such as MagLIF, we inferred deposited energy from shadowgraphy of laser-only experiments preformed at the PECOS target chamber using the Z-Beamlet laser. These energy profiles were used to initialize 2-dimensional simulations using by the adaptive mesh refinement code FLASH. Gradients or asymmetries in the energy deposition may seed instabilities that alter the fuel's distribution, or promote mix, as the blast wave interacts with the liner wall. The AMR capabilities of FLASH allow us to study the development and dynamics of these instabilities within the fuel and their effect on the liner before implosion. FLASH was developed in part by the DOE NNSA ASC and DOE Office of Science ASCR-supported Flash Center at the University of Chicago.
机译：磁衬里惯性融合（MagLIF）实验结合了激光，用于在充填氘的胶囊通过磁爆衬套压缩之前进行预热。在这项工作中，我们着眼于在MagLIF的激光预热组件过程中在燃料中形成的爆炸波，在爆炸之前，大约3kns的轴向1kJ能量沿轴向沉积到胶囊中。为了模拟与MagLIF等实验直接相关的爆炸波，我们从使用Z-Beamlet激光在PECOS目标室进行的仅激光实验的阴影摄影法推断了沉积能量。这些能量分布图用于通过自适应网格细化代码FLASH初始化二维仿真。当爆炸波与衬管壁相互作用时，能量沉积中的梯度或不对称可能导致不稳定性，从而改变燃料的分布或促进混合。 FLASH的AMR功能使我们能够研究燃料内部这些不稳定性的发展和动态，以及在内爆之前它们对衬管的影响。 FLASH部分由美国能源部NNSA ASC和美国能源部科学办公室ASCR支持的芝加哥大学闪存中心开发。

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