パルスパワー放電による高エネルギー密度プラズマ生成・計測の研究動向

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2014/01/01

タイトル(英語): Research Trend on Generation and Measurement for High-Energy-Density Plasma by using Pulsed-power Discharges

著者名: 佐々木　徹（長岡技術科学大学），菊池　崇志（長岡技術科学大学），堀岡　一彦（東京工業大学）

著者名(英語): Toru Sasaki (Nagaoka University of Technology), Takashi Kikuchi (Nagaoka University of Technology), Kazuhiko Horioka (Tokyo Institute of Technology)

キーワード: パルスパワー放電，高エネルギー密度プラズマ，Warm Dense Matter，輸送特性　　pulsed-power discharge，high-energy-density plasma，Warm Dense Matter，transport properties

要約(英語): Recent progress in high-energy-density physics (HEDP) phenomena generated by pulsed-power discharge has been introduced. To measure properties of warm dense matter (WDM), which is one of the topic in HEDP, we have reviewed the concept of scheme based on pulsed-power discharge. To generate a well-defined warm dense state for evaluating electrical conductivity by using pulsed-power discharge, an isochoric heating of foamed metal has been proposed, where isochoric heating can be achieved by surrounding the foamed metal with a rigid-walled sapphire capillary. The electrical conductivity observed agrees with previous experiments and predictions. For understanding properties of ablated dense tungsten, we have proposed a semi-empirical evaluation of thermal conductivity based on the Wiedemann-Franz law. The results indicate that the thermal conductivity derived from the electrical conductivity ranges from 0.1 to 100WK-1m-1 depending on the density at temperature of 5000K.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.134 No.1 （2014） 特集：2014年 研究開発の動向と最前線

本誌掲載ページ: 30-35 p

原稿種別: 解説／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/134/1/134_30/_article/-char/ja/