Resorcinol/formaldehyde (RF) foam-aluminum-quartz-layered targets were shock compressed up to 0.9 TPa in quartz to quantitatively evaluate the pressure-amplification effect of using a low-density RF foam as an ablator. The velocimetry and pyrometry were used to obtain the shock pressure and temperature in the quartz. The results show the use of an RF foam ablator with a density of 100 mg/cm³ increases the peak pressure of quartz by 76 (±11)% compared to the case with a polypropylene ablator. Our results also confirm that preheating of the quartz ahead of the shock wave due to the x rays produced in the ablated foam is negligible, indicating that a low-density RF foam is an ideal ablator material for laser-shock experiments.

中文翻译：

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间苯二酚/甲醛泡沫消融器在激光冲击实验中的压力放大效应

间苯二酚/甲醛 (RF) 泡沫-铝-石英层靶在石英中被冲击压缩至 0.9 TPa，以定量评估使用低密度 RF 泡沫作为消融器的压力放大效果。测速仪和高温计用于获得石英中的冲击压力和温度。结果表明，与使用聚丙烯消融器的情况相比，使用密度为 100 mg/cm ³的射频泡沫消融器使石英的峰值压力增加了 76 (±11)%。我们的结果还证实，由于烧蚀泡沫中产生的 X 射线，在冲击波之前对石英的预热可以忽略不计，这表明低密度射频泡沫是激光冲击实验的理想烧蚀材料。