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掺杂金属颗粒的高分子工质激光推进实验研究
引用本文:程建中,蔡建,胡云,张增明,丁泽军.掺杂金属颗粒的高分子工质激光推进实验研究[J].强激光与粒子束,2008,20(7).
作者姓名:程建中  蔡建  胡云  张增明  丁泽军
作者单位:1. 中国科学技术大学 物理系, 合肥 230026;2. 解放军汽车管理学院, 安徽 蚌埠 233011;3. 中国科学技术大学 力学和机械工程系 激光推进实验室, 合肥 230026;4. 中国科学技术大学 天文与应用物理系, 合肥 230026
基金项目:中国科学院知识创新工程项目,中国科学院"百人计划",高等学校博士学科点专项科研项目
摘    要: 利用大功率脉冲TEA-CO2激光器作为光源,对不同元素、浓度以及颗粒直径金属掺入PVC的靶材进行了测试。结果发现,不同元素种类以及不同颗粒直径的金属掺杂后的PVC靶材的冲量耦合系数变化不大,但在不同功率密度处,比冲均有显著提高,其中纳米Fe粉性能最为优异。在功率密度为5×106 W/cm2处,50%纳米Fe粉质量分数的靶材的比冲出现最大值。在大气环境下,对于掺有20%纳米Zn粉质量分数的PVC靶材,其冲量耦合系数随激光功率密度的提高而先升后降,比冲并不优异于比其熔点更高的Fe粉和Ni粉掺杂。

关 键 词:激光推进  工质  比冲  PVC
收稿时间:1900-01-01;

Experimental study of laser propulsion by using polymer propellant doped with metal powders
CHENG Jian-zhong,CAI Jian,HU Yun,ZHANG Zeng-ming,DING Ze-jun.Experimental study of laser propulsion by using polymer propellant doped with metal powders[J].High Power Laser and Particle Beams,2008,20(7).
Authors:CHENG Jian-zhong  CAI Jian  HU Yun  ZHANG Zeng-ming  DING Ze-jun
Institution:1. Physics Department, University of Science and Technology of China, Hefei 230026, China;2. Automotive Management Institute, Bengbu 233011, China;3. Laser Propulsion Laboratory, Department of Modern Mechanics, University of Science and Technology of China, Hefei 230026, China;4. Department of Astronomy and Applied Physics, University of Science and Technology of China, Hefei 230026, China
Abstract:The metal particles of different elements, concentrations and diameters are doped in PVC and the targets are tested by using a high-power pulsed TEA-CO2 laser. The results show that: the coupling coefficient changes slightly with elements and diameters of metal particles doped in PVC, but the specific impulse is significantly improved for different laser power densities. The doped nano-Fe powder PVC shows the best performance; the maximum specific impulse appears at 50% nano-Fe power concentration for the energy density of 5×106 W/cm2. At the atmospheric environment, the coupling coefficient for PVC target containing 20% nano-zinc powder increases first and then decreases with the increase of laser power density, and the specific impulse is not even better than that for PVC targets doped
Keywords:PVC
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