激光微烧蚀靶材的冲量耦合系数测量方法  

Measurements of Impulse Coupling Coefficient of Micro-laser Ablate Propulsion

作　　者：王殿恺[1] 洪延姬[2] 方娟[1] 史宏略[1] 

机构地区：[1]装备指挥技术学院研究生管理大队,北京101416 [2]装备指挥技术学院基础部,北京101416

出　　处：《装备指挥技术学院学报》2009年第6期96-99,共4页Journal of the Academy of Equipment Command & Technology

摘　　要：冲量耦合系数是激光微推进的重要参数,反映激光能量转化为动量的能力。提出了扭摆干涉仪测微冲量的原理以及测量方法,解决了难于精确测量10^-7 - 10^-5N.s的微冲量的问题,以掺碳的聚氯乙烯为靶材,测得了它在激光微烧蚀下的最高冲量耦合系数将近70μN/W。为激光微推进冲量耦合系数的计算提供了工程测量和计算方法。Impulse coupling coefficient is an important parameter,which represents the capability of laser energy transforming kinetic energy.The principle of micro-impulse measurement using torsion pendulum with laser interferometry is presented in this paper,providing a feasible method in the accurate measurement of micro-impulse ranging from 10^-7 to 10^-5 N·s.The impulse coupling coefficient of PVC（polyvinyl chloride） doped with carbon is tested in this method,obtaining results nearly 70 μN/W.An efficient way in measuring the impulse coupling coefficient is offered.

关 键 词：激光微推进 冲量耦合系数 扭摆 

分 类 号：V439.2[航空宇航科学与技术—航空宇航推进理论与工程]