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首页> 外文会议>International Conference on Advanced Diagnostics for Magnetic and Inertial Fusion, Sep 3-7, 2001, Varenna Italy >THERMAL SOFT X-RAYS INTERACTION WITH FOAM LAYERED GOLD TARGETS
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THERMAL SOFT X-RAYS INTERACTION WITH FOAM LAYERED GOLD TARGETS

机译：与泡沫层状金靶的热软X射线相互作用

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摘要

The purpose of the experiment presented in this paper was to study the effect of low density foams on the generation of shocks driven by thermal soft X-rays because of their applications in Inertial Confinement Fusion (ICF)~(1-4). Experiments were performed at MPQ, Garching using Asterix laser energy up to 400 J at 0.44 μm (3ω of Iodine laser) in ≈ 450 ps (FWHM). A conical shaped shield was constructed inside the Labyrinth cavity so that the laser irradiated area and the shocked material are not in direct view of each other (Fig. 1). Cavity surface area was equivalent to a sphere surface area of radius 0.5 mm. Target specifications are, 1) Aluminium base of thickness 16.95 μm with Al step of thickness 6.23 μm. 2) gold base of thickness 4.96 μm with a 1.95 μm gold step. The front surface of the gold foil was layered with low density foam (TMPTA-trimethylol propane triacrylate, C_(15)H_(20)O_6) of 50 μm thickness, ρ =20 mg/cc, and also 50, 100 and 150 μrn thick with ρ = 50 mg/cc). The areal densities were d = 0.1, 0.25, 0.5 and 0.75 mg/cm~2 respectively. A visible streak camera recorded the shock breakout signal.
机译：本文提出的实验目的是研究低密度泡沫在惯性约束聚变（ICF）〜（1-4）中的应用对热软X射线驱动的冲击产生的影响。实验是在MPQ上进行的，Garching使用的Asterix激光能量在0.44μm（碘激光的3ω）下以≈450 ps（FWHM）达到400J。在迷宫腔内构造了一个圆锥形的屏蔽罩，以使激光照射的区域和受冲击的材料不会相互直接看到（图1）。腔表面积等于半径为0.5毫米的球体表面积。目标规格是：1）铝基底厚度为16.95μm，铝台阶厚度为6.23μm。 2）厚度为4.96μm的金基底，带有1.95μm的金台阶。金箔的前表面上铺有厚度为50μm，ρ= 20 mg / cc，50、100和150μm的低密度泡沫塑料（TMPTA-三羟甲基丙烷三丙烯酸酯，C_（15）H_（20）O_6） ρ= 50 mg / cc）。面密度分别为d = 0.1、0.25、0.5和0.75 mg / cm〜2。一个可见的条纹摄像机记录了冲击爆发信号。

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