Evaluation of transport properties of warm dense matter using isochoric pulsed-power discharges

Abstract To evaluate transport properties of warm dense matter (WDM), we have demonstrated an isochoric foam ablation using pulsed-power discharge. In order to confirm the uniform heating of metal foam, the AC skin effect penetration of a magnetic field is observed. The skin effect is observed to be suppressed in foam samples as compared to rod samples. We also determined the density dependence of the electrical conductivity for copper and gold at WDM conditions. The measured electrical conductivity of copper agreed with previous experimental results. However the electrical conductivity for gold at the temperature of 3000 K was 10 times larger than the present measurements at 5000 K.