DC breakdown voltage characteristics of saturated liquid helium in the presence of metallic particles

Masanori Hara, Yuji Maeda, Nobutaka Nakagawa, Junya Suehiro, Shuichi Yamada

研究成果: Contribution to journalArticle査読

15 被引用数 (Scopus)

抄録

This paper deals with the breakdown voltage characteristics of saturated liquid helium in the presence of a needle-shaped or spherical metallic particle to obtain insulation design data for pool-cooled, low-temperature superconducting coils and to find the predominant factor affecting the breakdown voltage of liquid helium at a given state. The results show the following. (1) The generation of bubbles at the instant of collision of a particle with an electrode is caused mainly by the kinetic energy released from the moving particle to the liquid helium, while the electrostatic energy accompanying the microdischarge between the particle and the electrode has a lesser effect on it. (2) The lowest breakdown voltage at different particle conditions appears in the case of a free needle particle. The low breakdown voltage is caused by the bubble triggered by the particle collision, the high electric field at the tip of the needle particle, and the rich initial electrons supplied by the microdischarge.

本文言語英語
論文番号1657957
ページ(範囲)470-476
ページ数7
ジャーナルIEEE Transactions on Dielectrics and Electrical Insulation
13
3
DOI
出版ステータス出版済み - 6 2006

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

フィンガープリント 「DC breakdown voltage characteristics of saturated liquid helium in the presence of metallic particles」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル