Work

Direct Combinational Measurements of the Electron Density and Electric Field in Secondary Streamer Discharge under Atmospheric-Pressure Air

Year: 2025

Type: article

Abstract: The electron density and electric field govern physical and chemical reactions in a secondary streamer discharge under atmospheric-pressure air. We present direct combinational measurements of these essential quantities and demonstrate their consistency by solving the continuity equation for electrons. The measurements enabled validity examination of previous computational studies and clarified contradictions; the prominence was a near-cathode phenomenon measured during primary-to-secondary transition, which caused unpredicted ionization inside the positive secondary discharge. The thorough comparison revealed that a fundamental governing mechanism to be established for the secondary discharge is current continuity.

Source: Physical Review Letters

DOI: 10.1103/5sv6-28qp

Authors: Yuki Inada, Tatsutoshi Shioda, Ryosuke Nakamura, Akiko Kumada, Mitsuaki Maeyama, Ryo Ono

Institutions: Saitama University, The University of Tokyo

Language: English

Topic: Plasma Applications and Diagnostics

Subfield: Radiology, Nuclear Medicine and Imaging

Field: Medicine

Domain: Health Sciences

Open Access status: hybrid

Estimated APC paid: $3,750

Funders: Ministry of Education, Culture, Sports, Science and Technology, Japan Science and Technology Agency