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- W2048313897 abstract "A high-power, high-energy laser is used to accelerate miniature metal plates (3 mm diameter X 50 micron thick, typ.) to high velocities of perform 1D impacts. Several plate conditions are critical to their performance. The plates must be flat and intact, and traveling at a known velocity and acceleration profile. Because the plates are small only optical diagnostic techniques can be used without perturbing the plate are small only optical diagnostic techniques can be used without perturbing the plate performance. We use pulsed laser stereo-photography to determine plate integrity and flatness, and velocity interferometry (VISAR) to evaluate plate acceleration and terminal velocity. Laser-launched plates can accelerate to over 10<SUP>9</SUP> m<SUP>2</SUP>/s<SUP>2</SUP> and reach terminal velocities over 5 km/s. The high accelerations require temporal resolution of < 0.200-ns. The temporal resolution is accomplished by transferring the VISAR optical signals by optical fiber to an electronic streak camera for recording. Near 1D plate impacts are accomplished by converting the spatial Gaussian laser beam to a Tophat spatial profile. The pulsed laser stereo-photography system consists of a 10X stereo camera and a 5-ns pulsed doubled Nd:YAG laser for the light source. By incorporating these different optical techniques a complete understanding of the dynamic performance of miniature plates in flight is accomplished." @default.
- W2048313897 created "2016-06-24" @default.
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- W2048313897 date "1997-05-28" @default.
- W2048313897 modified "2023-10-18" @default.
- W2048313897 title "<title>One-dimensional plate-launch techniques and associated diagnostics</title>" @default.
- W2048313897 doi "https://doi.org/10.1117/12.273353" @default.
- W2048313897 hasPublicationYear "1997" @default.
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