Abstract
Optical diagnostics to evaluate the velocity, acceleration profiles, planarity, and integrity of miniature (≤5 μm thick x ≤600 μm diam) plates of aluminum and other metals will be reported. By correlating various optical techniques and collected data, a complete understanding of the flying plate can be determined. Velocity interferometer system for any reflector (VISAR), with ≤120 ps resolution per data point, is used to record plate acceleration and terminal velocity. Electronic-streak and pulsed-laser stereo photography can determine planarity and integrity. Flyer-plate performance data are related to the properties of the laser beam that accelerates the plate. Laser parameters, such as energy density, power density, and spatial profile, affect the flying-plate performance parameters, i.e., planarity, acceleration, and velocity. Flying-plate accelerations of ≥10<sup>10</sup> G and terminal velocities of ≥6 mm/μs have been recorded, via a 10-ns-Nd:YAG laser pulse delivered to a tamped, 5-μm-aluminum plate.
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