(a) Inert shock-contact structure of laser experiment, (b) detonation front structure not observed in laser experiment.
Schematic of light source layout for laser-assisted blast wave generation.
Explosive vaporization of copper, aluminum, brass by 20, laser intensities shown in the increasing order of time sequence.
Measured shock velocity, , for copper ablation at .
Planar to spherical structure transition shown during and for aluminum. For the copper case, this transition occurred at as shown in Fig. 4.
Measured shock velocity for metal ablation at .
Planar (1D) structure of initial blast wave as multigas (aluminum vapor and air) shock tube problem computed by the high-resolution hydrocode developed for shock compression of condensed matter (Ref. 20). Density (a) and pressure (b) profiles are shown at two different times suggesting a shock velocity of . Calculated states match experimental data for aluminum at 75 ns.
Theoretical states behind the leading (spherical) shock at for given shocked air states . For aluminum at , , , and .
Fraction of laser intensity absorbed by the metal targets at .
Theoretical Hugoniot properties of laser-induced shock (air) state during the first 1000 ns of beam. Shock speed is measured (with error).
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