Ramp-Wave Compression Experiment with Direct Laser Illumination on ShenGuang-Ⅲ Prototype Laser Facility

王峰; 薛全喜; 纪腾; 理玉龙; 徐涛; 彭晓世

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Ramp-Wave Compression Experiment with Direct Laser Illumination on ShenGuang-Ⅲ Prototype Laser Facility

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Ramp-wave compression experiment to balance the high compression pressure generation in aluminum and x-ray blanking effect in transparent window is demonstrated with an imaging velocity interferometer system for any reflector(VISAR)on ShenGuang-Ⅲ prototype laser facility.The highest pressure is about 500 GPa after using the multilayer target design Al/Au/Al/LiF and ~10^(13)W/cm^2 laser pulse illuminated on the planar Al target,which generates the spatial uniformity to <1% over 500μm on the ablation layer.A 2-pm-thick Au layer is used to prevent the x-ray from preheating the planar ablation Al layer and window material LiF.The imaging VISAR system can be used to record the abrupt loss of the probe beam(λ= 532 nm)caused by absorption and reflection of 20-μm,30-μm and 40-μm-thick Al,i.e.,the blanking effect.Although there are slight shocks in the target,the peak pressure 500 GPa,which is the highest data up to now,is obtained with ramp-wave compression.

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《中国物理快报：英文版》 |2017年第3期|82-85|共4页
作者
王峰; 薛全喜; 纪腾; 理玉龙; 徐涛; 彭晓世;
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作者单位

Research Center of Laser Fusion;

China Academic of Engineering and Physics;

Collaborative Innovation Center of IFSA;

Shanghai Jiao Tong University;

State Key Laboratory of Laser Interaction with Matter;

and Northwest Institute of Nuclear Technology;

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原文格式 PDF
正文语种 chi
中图分类 TH744.5;
关键词
VISAR; LiF; Prototype Laser Facility; Ramp-Wave Compression Experiment with Direct Laser Illumination on ShenGuang; RWC; Al;

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Ramp-Wave Compression Experiment with Direct Laser Illumination on ShenGuang-Ⅲ Prototype Laser Facility

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