Hydroxyl Radical Generation on Bubble Surface of Aqua-Plasma Discharge

Author

Yoon, Sung-Young ; Lee, Sang-Heun ; Hong, Jung Wha ; Kang, Woo Seok ; Jang, Youn-Chang ; Kim, Gon-Ho

Author_Institution

Dept. of Nucl. Eng., Seoul Nat. Univ., Seoul, South Korea

Volume

39

Issue

11

fYear

2011

Firstpage

2658

Lastpage

2659

Abstract

The location of hydroxyl radical (OH^*) generation in aqua plasma is investigated with the images of vapor bubble discharge in a conductive electrolyte (saline). A comparison of the visible-and UV-ray data taken from the Na^+* and radical OH^* reveals that Na^+* is generated in both volume and surface of bubble while most of OH^* is observed at the vapor surface. This result implies that the steamer-type of aqua plasma was generated in the vapor bubble covered over a metal electrode tip, and the charged particles disperse along the surface of the vapor bubble.

Keywords

bubbles; discharges (electric); electrodes; free radicals; oxygen compounds; plasma chemistry; plasma diagnostics; plasma sources; positive ions; sodium; Na⁺; OH; UV data; aqua plasma discharge bubble surface; charged particle dispersion; conductive electrolyte; hydroxyl radical generation; metal electrode tip; steamer type plasma; vapor bubble discharge; visible data; Discharges; Electrodes; High speed optical techniques; Mirrors; Optical imaging; Plasmas; Surface discharges; Aqua plasma; electrolyte; hydroxyl radical; medical application; vapor bubble;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2011.2159133

Filename

5944974