Wall and laser spot motion in cylindrical hohlraums
Wall and laser spot motion in cylindrical hohlraums
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DOI：
10.1063/1.3099054
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发表时间：
2009-03
影响因子：
2.2
通讯作者：
G. Huser;C. Courtois;M. Monteil
中科院分区：
文献类型：
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作者：
G. Huser;C. Courtois;M. Monteil
在Omega激光装置上对空的、填充丙烷的和衬有塑料（CH）的镀金圆柱形黑腔进行了腔壁和激光光斑运动的测量[T。R. Boehly等人，可选通信133，495（1997）]。使用轴向二维（2D）X射线成像测量壁运动，并使用条纹硬X射线成像通过薄壁垂直观察激光光斑运动。实验结果和二维流体动力学模拟表明，虽然空的目标表现出轴上等离子体碰撞，CH内衬和丙烷填充的目标抑制壁膨胀，证实了垂直条纹成像显示较慢的运动的激光光斑。
Wall and laser spot motion measurements in empty, propane-filled and plastic (CH)-lined gold coated cylindrical hohlraums were performed on the Omega laser facility [T. R. Boehly et al., Opt. Commun. 133, 495 (1997)]. Wall motion was measured using axial two-dimensional (2D) x-ray imaging and laser spot motion was perpendicularly observed through a thinned wall using streaked hard x-ray imaging. Experimental results and 2D hydrodynamic simulations show that while empty targets exhibit on-axis plasma collision, CH-lined and propane-filled targets inhibit wall expansion, corroborated with perpendicular streaked imaging showing a slower motion of laser spots.