BROMINATED PLASTIC EQUATION OF STATE MEASUREMENTS USING LASER-DRIVEN SHOCKS

In order for brominated plastic (CHBr) to be used in future large lase rs, such as the National Ignition Facility, capsule design, and equati on of state (EOS) data are needed to address uncertainties in modeling . We have performed CHBr EOS measurements using the impedance matching technique. Laser beams spatially smoothed, and giving a spot size of 400 mu m and intensities less than or equal to 5 x 10(13) W/cm(2), pro duced high-quality shock waves allowing the simultaneous measurements of the shock velocities in two materials, one used as reference. Resul ts are compared to other experiments and to EOS calculations. We obtai ned very good agreement with the theoretical curve for pressures rangi ng from 1 to 3 Mbar. (C) 1998 American Institute of Physics.