物理学报Issue(23)：1-7,7.DOI:10.7498/aps.63.235203
掺杂对CH样品Rayleigh-Taylor不稳定性增长的影响
Exp erimental investigation on the influence of the dopant ratio on ablative Rayleigh-Taylor instability growth
袁永腾 1丁永坤 1缪文勇 1王立峰 2涂绍勇 1吴俊峰 2曹柱荣 1詹夏宇 1叶文华 2刘慎业 1江少恩1
作者信息
- 1. 中国工程物理研究院激光聚变研究中心，绵阳 621900
- 2. 北京应用物理与计算数学研究所，北京 100088
- 折叠
摘要
Abstract
Ablative Rayleigh-Taylor growth was measured with single-mode modulated planar CH foil with different ratio of Br dopant at Shenguang II laser facility. Results show that CH (6% Br) sample first enters the nonlinear regime and has the largest perturbation amplitude of second harmonic. The reason is that the density gradient effects can suppress the generation of the second harmonic, the more the Br is doped, the smaller the density gradient scale length can be achieved. The density gradient effects also suppress the feedback of third-order harmonic to the fundamental mode, which induces the nonlinear saturation amplitude to exceed 0.1λ, as the classical prediction shows.关键词
掺杂/Rayleigh-Taylor不稳定性/密度梯度效应/弱非线性阶段Key words
dopant/Rayleigh-Taylor instability/density gradient effect/weakly nonlinear regime引用本文复制引用
袁永腾,丁永坤,缪文勇,王立峰,涂绍勇,吴俊峰,曹柱荣,詹夏宇,叶文华,刘慎业,江少恩..掺杂对CH样品Rayleigh-Taylor不稳定性增长的影响[J].物理学报,2014,(23):1-7,7.
