Prebreakdown process of a negative nanosecond pulsed discharge in supercritical carbon dioxide

被引：9

作者：

Furusato, Tomohiro ^{[1
]}

Tanoue, Hiroyuki ^{[1
]}

Katsuki, Sunao ^{[1
,2
]}

Hara, Masanori ^{[3
]}

Akiyama, Hidenori ^{[1
,2
]}

机构：

[1] Kumamoto Univ, Grad Sch Sci & Technol, Kumamoto 8608555, Japan

[2] Kumamoto Univ, Inst Pulsed Power Sci, Kumamoto 8608555, Japan

[3] Kyushu Elect Power Co Inc, Res Inst, Fukuoka 8158520, Japan

来源：

APPLIED PHYSICS EXPRESS | 2014年 / 7卷 / 02期

基金：

日本学术振兴会;

关键词：

BREAKDOWN;

D O I：

10.7567/APEX.7.026201

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The prebreakdown process in a 100 mu m gap in supercritical carbon dioxide was investigated under negative nanosecond pulsed voltage. A bushlike negative streamer was observed by the shadowgraph method. Although currents flowed in the middle of the rising edge, a back discharge current suddenly appeared at the falling edge when a peak voltage exceeding 28 kV was applied. Electron multiplication was estimated to be approximately 10(8) by integrated calculation of the back discharge current. These results suggest that a negative streamer grows by steps and the inside of the bush streamer is considered to consist of a high-pressure gas. (C) 2014 The Japan Society of Applied Physics

引用

页数：3

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