项目名称: 复合含能薄膜在激光驱动飞片技术中的作用机理研究
项目编号: No.11202105
项目类型: 青年科学基金项目
立项/批准年度: 2013
项目学科: 数理科学和化学
项目作者: 吴立志
作者单位: 南京理工大学
项目金额: 26万元
中文摘要: 激光驱动飞片技术已经成为一种重要的动高压加载技术,是目前产生几太帕动高压最重要的实验室初始能源。本项目针对激光驱动飞片技术,开展将复合含能薄膜用于激光飞片靶发射层的实验和理论研究,包括研究复合含能薄膜飞片靶的最佳工艺制备条件,开展复合含能薄膜飞片靶的激光烧蚀机理研究,利用发射光谱法研究激光等离子体的特性规律。将激光Doppler测速技术应用于激光飞片的速度测量中,使用PVDF应力计测试飞片冲击压力,探讨激光和飞片厚度等参数的优化匹配。模拟激光等离子体对飞片的驱动过程,揭示激光等离子体驱动飞片的机理。该项目对于补充激光驱动飞片技术的基础数据,探索在已有技术基础上提高飞片速度的新方法,推动激光驱动飞片技术在高压物理学、空间碎片科学、材料微成型以及炸药的快速起爆等领域的应用具有重要意义。
中文关键词: 激光烧蚀;激光飞片;复合含能薄膜;电子温度;
英文摘要: Technology of laser-driven flyer has been an important tool in loading high pressure physics, and it is also the most important tool in loading pressure of TPa in laboratory.This work include the study of experiment and theory in using composite energetic films as the ablation layer of flyers,and getting the most efficient way for preparating the composite energetic flyers. We will study the temperature and the density rule of laser induced plasma through the emission spectrum.Then, the laser ablation theory will be researched. We will get the results of flyer's velocity and the impacting pressure by photonic doppler velocimetry and PVDF films. By simulating the process of laser accelerating flyers, the theory of flyers driven by laser induced plasma will be revealed. This work will be very important for completing the basic data about laser-driven flyer technology, accelerating the velocity of flyers,improving the applications of this technology in high pressure physics, astrophysics, materials sciences, and ultrafast ignition of explosives areas.
英文关键词: Laser ablation;Laser-driven flyer;Enegetic mutilayers;Electron temperature;