Constraining preheat energy deposition in MagLIF experiments with multi-frame shadowgraphy
Constraining preheat energy deposition in MagLIF experiments with multi-frame shadowgraphy
复制标题
使用多帧阴影成像技术限制 MagLIF 实验中的预热能量沉积
作者：
A. Harvey;M. Geissel;C. Jennings;M. Weis;M. Gomez;J. Fein;D. Ampleford;G. Chandler;M. Glinsky;K. Hahn;S. Hansen;E. Harding;P. Knapp;R. Paguio;L. Perea;K. Peterson;J. L. Porter;P. Rambo;G. Robertson;G. Rochau;C. L. Ruiz;J. Schwarz;J. Shores;D. Sinars;S. Slutz;G. Smith;I. Smith;C. Speas;K. Whittemore;D. Woodbury
多帧阴影诊断已被开发和应用于激光预热实验相关的磁化内衬惯性聚变（MagLIF）的概念。诊断视图的等离子体激光预热产生的MagLIF相关的气体细胞后，立即激光存款的能量，以及由此产生的冲击波演变稍后的时间。爆炸波的膨胀是用一维辐射流体动力学模拟来建模的，该模拟将爆炸波在给定时间的边界与沉积到燃料中的能量相关联。这种技术被应用到四个不同的预热协议，已被用于集成MagLIF实验，以推断沉积到燃料中的激光能量的量。集成MagLIF实验的结果进行了比较与二维LASNEX模拟。对于三种不同的预热方案，表现最好的发射返回的中子产率为模拟预测的1.40 -55%。
A multi-frame shadowgraphy diagnostic has been developed and applied to laser preheat experiments relevant to the Magnetized Liner Inertial Fusion (MagLIF) concept. The 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. The 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 ∼40–55% of the simulated predictions for three different preheat protocols.
混合对磁化线性惯性聚变靶性能的起源和影响
影响因子：
2.2
作者：
Knapp, P. F.;Gomez, M. R.;Hansen, S. B.;Glinsky, M. E.;Jennings, C. A.;Slutz, S. A.;Harding, E. C.;Hahn, K. D.;Weis, M. R.;Evans, M.
通讯作者：
Evans, M.