Experimental measurement of the conditions for the planarity of laser-driven shock waves

Salzmann, David; Gilath, Irith; Arad, Benyamin
April 1988
Applied Physics Letters;4/4/1988, Vol. 52 Issue 14, p1128
Academic Journal
Laser-driven shock wave experiments have been conducted in the regime of 1011 W/cm2 in which incipient spall in a 300-μm-thick aluminum foil was used as an indicator of a constant shock state. Laser input energy and deposition spot size were varied to obtain a condition of incipient spall. The results agree with previous models in that a constant laser irradiance produces a constant shock state. The effective diameter of the laser is indicated to be about 0.44 mm larger than the laser spot diameter due to lateral effects during the shock generation or propagation phases.


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