Investigation on the laser-induced shock pressure with condensed matter model. (23rd April 2015)

• Record Type: Journal Article
• Authors: Zhai, Pengcheng; Dong, Zhewei; Miao, Rui; Deng, Xiaoxu; Chen, Lei
• Is Part Of: Japanese journal of applied physics. Volume 54:Number 5(2015:May)
• Publication Date: 2015-04-23
• Subjects: Physics -- Periodicals; 621.05
• DOI: 10.7567/JJAP.54.056203
• Languages: English
• ISSNs: 0021-4922

Abstract

Abstract: In this paper, based on the basic shock wave relations and the stiffened gas equation of state, the laser-induced shock pressures, which are generated with homogenous rectangular laser pulse at power density of several GW/cm 2, are proposed theoretically and experimentally. The laser-induced shock pressures are affected by the laser power density as well as the shock velocities, initial densities and adiabatic exponents of the target material and confined water which are considered to be condensed matter other than "solid" or "perfect gas" in the previous work. Performed on Al-2024 alloys, the laser-induced shock wave was measured with the poly(vinylidene fluoride) transducer and recorded by the oscilloscope. The laser-induced shock pressure derived from the proposed method agrees much better with the experimental results than that using the "solid" or "perfect gas" theory.