激光单脉冲冲量的扭摆测量方法
Measuring method of impulse of single pulse laser with torsion pendulum
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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。Abstract: Laser focuses onto a target, producing an ablation back-jet, which provides a micro-impulse. The torsion pendulum micro-impulse measure method was studied. The equations of oscillation were put forward under the thrust of ablation back-jet. And 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 measure and calculation for single pulse impulse with torsion pendulum.
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Key words:
- laser /
- impulse /
- angle of torsion /
- measurement
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