Potential structure of discharge plasma inside liquid directly measured by an electrostatic probe

被引：12

作者：

Chen, Qiang ^{[1
]}

Kaneko, Toshiro ^{[1
,2
]}

Matsuda, Naoki ^{[3
]}

Hatakeyama, Rikizo ^{[1
]}

机构：

[1] Tohoku Univ, Dept Elect Engn, Sendai, Miyagi 9808579, Japan

[2] CREST JST, Tokyo 1020075, Japan

[3] AIST, Measurement Solut Res Ctr, Tosu, Saga 8410052, Japan

来源：

APPLIED PHYSICS LETTERS | 2013年 / 102卷 / 24期

关键词：

WATER;

D O I：

10.1063/1.4812199

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Potential structures of a discharge plasma inside a liquid are investigated by an electrostatic probe measurement. The time evolution of radial profiles of the floating potential for the plasma inside liquid reveals that the dominant negative charges in the plasma are the negative ion species such as OH- and O-2(-) rather than electrons. In addition, a positive potential gradient exists at the plasma-liquid interface due to the presence of an electrical double layer which is caused by the separation of low-mass positive ion of H+ and high-mass negative ions of OH- and O-2(-) near the plasma-liquid interface. (C) 2013 AIP Publishing LLC.

引用

页数：4

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