Open AccessMeasurement of the plasma density of tip gap discharge at atmospheric pressure by M-Z interferometry
Author(s) -
Lulu Cui
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/782/3/032038
Subject(s) - electron density , interferometry , plasma , atmospheric pressure , atomic physics , electron temperature , electron , materials science , atmospheric pressure plasma , plasma diagnostics , optics , physics , meteorology , quantum mechanics
In this paper, the plasma density in the lateral discharge of the tip gap at atmospheric pressure was measured by Mach-Zehnder interferometry. Based on the offset of the fringe picture, the maximum electron density of the plasma was calculated to be about 1.76 × 10 18 cm −3 . At the same time, the spatial distribution of plasma electron density and the change of the highest electron density with the applied voltage across the tip were obtained.