Electric potential developed by single-pulse needle-water discharge

Takamasa Okumura, Chaoyi Zhou, Eijiro Kubo, Tetsuji Shimizu, Tomoki Nakajima, Takehiko Sato

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


The electric potential in water formed by atmospheric-pressure plasma was evaluated to understand the biological effects of charges in the plasma. A pulsed voltage was applied to a needle electrode at 1 mm from the surface of water in an insulating vessel, and a discharge was generated between the needle electrode and the water surface. The evolution of the potential in the water 100 mm from the discharge point was measured. A computational estimation using an equivalent circuit exhibited potential of 602 V at the discharge point when the discharge current was 316 mA. This estimation qualitatively agrees with a numerical calculation.

Original languageEnglish
Article number016201
JournalApplied Physics Express
Issue number1
Publication statusPublished - Jan 2018
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Engineering
  • General Physics and Astronomy


Dive into the research topics of 'Electric potential developed by single-pulse needle-water discharge'. Together they form a unique fingerprint.

Cite this