神光Ⅱ装置上间接驱动烧蚀瑞利-泰勒不稳定性实验分析

doi:10.11884/HPLPB201527.032009

CORC > 北京大学 > 工学院

	神光Ⅱ装置上间接驱动烧蚀瑞利-泰勒不稳定性实验分析; Experimental analysis of indirect-drive ablative Rayleigh-Taylor instability on Shenguang Ⅱ
	吴俊峰 ; 缪文勇 ; 王立锋 ; 曹柱荣 ; 郁晓瑾 ; 叶文华 ; 郑无敌 ; 刘杰 ; 王敏
刊名	强激光与粒子束
	2015
关键词	惯性约束聚变流体力学不稳定性瑞利-泰勒不稳定性 inertial confinement fusion hydrodynamic instabilities Rayleigh-Taylor instability
DOI	10.11884/HPLPB201527.032009
英文摘要	在神光Ⅱ激光装置上开展了一系列辐射烧蚀Rayleigh-Taylor(RT)不稳定性实验.平面靶烧蚀加速飞行轨迹实验结果与LARED-S模拟结果的比较表明腔壁辐射源能流明显小于激光注入孔的辐射能流,且辐射源的非平衡Planckian谱对靶的飞行轨迹和扰动增长有重要影响.实验分别观测到初始小扰动幅度烧蚀RT明显的增长和初始大扰动幅度尖钉变窄和气泡变宽的清晰物理图像.通过提高空间分辨率,实验获得了二次和三次谐波的增长数据,模拟结果与实验结果相符合.神光Ⅱ激光装置上开展的流体不稳定性实验考核了LARED-S程序的一维和二维计算.; A series of ARTI experiments have been performed in Shenguang II (SGII) laser facility of China. The simulation results from the LARED-S code for the planar foil trajectory experiment indicate that the energy flux at the hohlraum wall is obviously less than that at the laser entrance hole (LEH). Furthermore, the non-Planckian spectra of X-ray source can affect the dynamics of the foil flight and the perturbation growth. The images of evident growth of the ARTI initiated by a small-amplitude perturbation and the ??spike-bubble?? pattern initiated by large-amplitude perturbation were observed. The data of the growth of the second and the third harmonics were also obtained by increasing the spatial resolution in the experiments. The simulation results are in general consistent with the experimental results. The reliability of the LARRED-S code has been tested and validated through the comparison with the experiment results. ?, 2015, Editorial Office of High Power Laser and Particle Beams. All right reserved.; 国家自然科学基金项目; 中国工程物理研究院院长基金项目; 国家重点基础研究发展计划项目; 中国工程物理研究院科学技术发展基金项目; EI; 中文核心期刊要目总览(PKU); 中国科技核心期刊(ISTIC); 中国科学引文数据库(CSCD); 0; 3; 69-76; 27
语种	中文
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/263683]
专题	工学院
推荐引用方式 GB/T 7714	吴俊峰,缪文勇,王立锋,等. 神光Ⅱ装置上间接驱动烧蚀瑞利-泰勒不稳定性实验分析, Experimental analysis of indirect-drive ablative Rayleigh-Taylor instability on Shenguang Ⅱ[J]. 强激光与粒子束,2015.
APA	吴俊峰.,缪文勇.,王立锋.,曹柱荣.,郁晓瑾.,...&王敏.(2015).神光Ⅱ装置上间接驱动烧蚀瑞利-泰勒不稳定性实验分析.强激光与粒子束.
MLA	吴俊峰,et al."神光Ⅱ装置上间接驱动烧蚀瑞利-泰勒不稳定性实验分析".强激光与粒子束 (2015).