14 October 1994 Stop-motion microphotography of laser-driven plates
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Abstract
Laser driven plates have been used for several years for high velocity shock wave and impact studies. Recent questions about the integrity and ablation rates of these plates coupled with an improved capability for microscopic stop motion photography led to this study. For these experiments, the plates were aluminum, coated on the ends of optical fibers. A high power laser pulse in the fiber ionizes the aluminum at the fiber/coating interface. The plasma thus created accelerates the remaining aluminum to high velocities, several kilometers per second. We defined `thick' or `thin' coatings as those where a flying plate (flyer) was launched vs. the material being completely ionized. Here we were specifically interested in the thick/thin boundary to develop data for the numerical models attempting to predict flyer behavior.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Alan M. Frank, Alan M. Frank, Wayne M. Trott, Wayne M. Trott, } "Stop-motion microphotography of laser-driven plates", Proc. SPIE 2273, Ultrahigh- and High-Speed Photography, Videography, and Photonics '94, (14 October 1994); doi: 10.1117/12.189027; https://doi.org/10.1117/12.189027
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