Electron Temperature Measurement by Floating Probe Method Using AC Voltage. (November 2016)

• Record Type: Journal Article
• Authors: Nodomi, Satoshi; Sato, Shuichi; Ohuchi, Mikio
• Is Part Of: Plasma science and technology. Volume 18:Number 11(2016:Nov.)
• Page Start: 1089
• Page End: 1094
• Publication Date: 2016-11
• Subjects: 52.70.−m; electrostatic probe -- Langmuir probe -- floating potential -- electron temperature -- sheath; Plasma (Ionized gases) -- Periodicals; 530.44
• DOI: 10.1088/1009-0630/18/11/06
• Languages: English
• ISSNs: 1009-0630

Abstract

Abstract: This study presents a novel floating probe method to measure electron temperatures using a hollow cathode-type discharge tube. The proposed method detects a shift in the floating potential when an AC voltage is applied to a probe through an intermediary blocking capacitor. The shift in the floating potential is described as a function of the electron temperature and the applied AC voltage. The floating probe method is simpler than the Langmuir probe method because it does not require the measurement of volt-ampere characteristics. As the input AC voltage increases, the electron temperature converges. The electron temperature measured using the floating probe method with an applied sinusoidal voltage shows a value close to the first (tail) electron temperature in the range of the floating potential.