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

Volume

40

Issue

12

fYear

2012

Firstpage

3455

Lastpage

3457

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;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2012.2219510

Filename

6334472