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Constraining preheat energy deposition in MagLIF experiments with multi-frame shadowgraphy

机译:用多帧影像术中的Maglif实验中的预热能量沉积

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A multi-frame shadowgraphy diagnostic has been developed and applied to laser preheat experiments relevant to the Magnetized Liner Inertial Fusion (MagLIF) concept. 'fhe diagnostic views the plasma created by laser preheat in MagLIF-relevant gas cells immediately after the laser deposits energy as well as the resulting blast wave evolution later in time. 'file expansion of the blast wave is modeled with 1D radiation-hydrodynamic simulations that relate the boundary of the blast wave at a given time to the energy deposited into the fuel. This technique is applied to four different preheat protocols that have been used in integrated MagLIF experiments to infer the amount of energy deposited by the laser into the fuel. The results of the integrated MagLIF experiments are compared with those of two-dimensional LASNEX simulations. The best performing shots returned neutron yields, similar to 40-55% of the simulated predictions for three different preheat protocols. Published under license by AIP Publishing.
机译:已经开发了一种多帧影像诊断,并应用于与磁化衬里惯性融合(Maglif)概念相关的激光预热实验。 'FHE诊断视图通过在激光沉积能量之后立即通过激光预热在Maglif相关的气体细胞中产生的等离子体,以及在后面的时间内得到的爆发波演化。 '爆炸波的文件扩展是用1D辐射 - 流体动力模拟建模,其将鼓波的边界与沉积在燃料中的能量相关联。该技术应用于四种不同的预热方案,其已用于集成的Maglif实验中,以推断激光器沉积的能量量进入燃料。将集成的Maglif实验结果与二维Lasnex模拟的结果进行比较。最佳性能射击返回中子产量,类似于三种不同预热方案的模拟预测的40-55%。通过AIP发布在许可证下发布。

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