Interferometry and High Speed Photography of Laser-Driven Flyer Plates.

摘要

Laser-driven thin (2-10-(mu) thick) plates of aluminum and copper are accelerated to velocities (ge)5 km/s by a 1.06-(mu) wavelength Nd:YAG 8-10 ns FWHM laser pulse at power densities 0.7-4.0 GW/cm(sup 2). Accelerations (ge)10(sup 9) km/s(sup 2) have been achieved. The acceleration and velocity of these 0.4-1.0-mm-diameter plates are experimentally recorded by velocity interferometry (VISAR) and the planarity of impact by streak photography. 6 refs., 7 figs.