激光单脉冲冲量的扭摆测量方法  

Impulse measurement method of single pulse laser with torsion pendulum

作　　者：金星[1] 洪延姬[1] 陈景鹏[1] 方娟[1] 黄龙呈[1] 

机构地区：[1]装备指挥技术学院,北京101416

出　　处：《强激光与粒子束》2006年第11期1809-1812,共4页High Power Laser and Particle Beams

基　　金：国家973项目资助课题

摘　　要：激光脉冲作用于工质,使工质烧蚀反喷,产生微小冲量。研究了扭摆微小冲量测量方法,提出了在激光烧蚀反喷作用力下扭摆的运动方程,激光单脉冲作用下冲量所满足的积分方程。进一步通过积分方程的离散化方法,提出了激光单脉冲冲量的计算方法,并且进行了精度分析。为采用扭摆测量激光单脉冲冲量,提供了工程测量和计算方法。When laser focuses onto a target, an ablation back-jet is produced, providing a micro-impulse. The torsion pendulum micro-impulse measurement method was studied. The equations of oscillation were put forward under the thrust of ablation back-jet. The integral equation of impulse was presented under the action of single pulse laser. Based on the discrete integral equation of impulse, the calculation method of single pulse impulse was proposed. Furthermore, the error of calculation was analyzed. This method could be used in engineering measurement and calculation for single pulse impulse with torsion pendulum.

关 键 词：激光 冲量 扭转角 测量 

分 类 号：O327[理学—一般力学与力学基础] TU311[理学—力学]