Thermal conductivity measurement of dense tungsten plasma using laser-induced fluorescence

We have measured the thermal conductivity of dense plasma using an isochorically-heating pulsed-power discharge with a laser-induced fluorescence. To understands the thermal conductivity dependences on temperature and density for the dense tungsten plasma, we have measured the thermal conductivity of several tungsten samples. The results show that the thermal conductivity is increased with the increase of temperature. The obtained thermal conductivity at the plasma temperature of 10000K is approximately log₁₀ κ=1.5 W/(m·K), regardless of density. (author)