- Conference date: 31 July-5 August, 2005
- Location: Baltimore, Maryland (USA)
To drive shocks into solids with a laser we either illuminate the material directly, or to get higher pressures, illuminate a plastic ablator that overlays the material of interest. In both cases the illumination intensity is low, <<1013 W/cm2, compared to that for traditional laser fusion targets. In this regime, the laser beam creates and interacts with a collisional, rather than a collisionless, plasma. We present scaling relationships for shock pressure with intensity derived from simulations for this low‐intensity collisional plasma regime. In addition, sometimes the plastic‐ablator targets have a thin flash‐coating of Al on the plastic surface as a shine‐through barrier; this Al layer can be a source of hot x‐ray preheat. We discuss how the preheat affects the shock pressure, with application to simulating VISAR measurements from experiments conducted on various lasers on shock compression of Fe.
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