Title :
A Semiempirical Evaluation of the Thermal Conductivity in Ablated Dense Tungsten Plasma
Author :
Sasaki, Toru ; Takahashi, Takuya ; Amano, Yusuke ; Miki, Yasutoshi ; Kikuchi, Takashi ; Harada, Nobuhiro ; Horioka, Kazuhiko
Author_Institution :
Dept. of Electr. Eng., Nagaoka Univ. of Technol., Nagaoka, Japan
Abstract :
For understanding the properties of ablated dense tungsten, we have proposed a semiempirical evaluation of thermal conductivity based on the Wiedemann-Franz law. The electrical conductivity of ablated dense tungsten has been evaluated by the exploding-wire discharges in water and the isochoric heating of wire in a vacuum. The results indicate that the thermal conductivity derived from the electrical conductivity ranges from 0.1 to 100 W·K-1m-1 depending on the density at a temperature of 5000 K.
Keywords :
discharges (electric); electrical conductivity; exploding wires; plasma density; plasma transport processes; thermal conductivity; tungsten; W; Wiedemann-Franz law; ablated dense tungsten plasma; ablated dense tungsten properties; electrical conductivity; exploding-wire discharges; plasma density; semiempirical evaluation; temperature 5000 K; thermal conductivity; wire isochoric heating process; Conductivity; Plasmas; Thermal conductivity; Tungsten; Ablated dense tungsten; pulsed-power discharges; semiempirical approach; thermal conductivity;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2012.2219510
