Optical analysis method for fast plasma characterization of high-speed miniaturized synthetic jet

Ye Yuan; Yan Zhang; Cheng Guo; Xiaolu Kang; Zhong Yan; Xiaoping Huang; Qing Zhao

doi:10.3788/COL202220.073001

Chinese Optics Letters, Volume. 20, Issue 7, 073001(2022)

Optical analysis method for fast plasma characterization of high-speed miniaturized synthetic jet

Ye Yuan¹, Yan Zhang², Cheng Guo¹, Xiaolu Kang², Zhong Yan¹, Xiaoping Huang^1,*, and Qing Zhao¹

Author Affiliations

¹School of Resources and Environment, University of Electronic Science and Technology of China, Chengdu 610054, China

²Shanghai Institute of Space Propulsion, Shanghai Engineering Research Center of Space Engine, Shanghai 201112, China

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In this paper, a new optical analysis method for plasma characterization is proposed. Plasma characteristics are obtained directly by measuring the plasma luminous color, rather than the complex spectral diagnosis method, which is difficult to obtain at high speed. By using the light transmittance curve of the human cornea, the RGB coordinates are calculated from the measured plasma spectrum data. Plasma characteristics are diagnosed using the Boltzmann plot method and the Stark broadening method. The corresponding relationship of the electron temperature, electron density data points, and luminous color is established and analyzed. Our research results indicate that this optical analysis method is feasible and promising for fast plasma characterization.

Keywords

high-speed miniaturized actuator optical analysis method plasma characteristics spectral diagnosis

1. Introduction

The optical spectral diagnosis is widely used nowadays in plasma characterization^[1–9], quality inspection^[10–12], medical science^[13–16], and many other fields^[17–19]. The plasma diagnosis method based on the emission spectrum can be used for experimental research on the plasma characteristics of plasma synthetic jet actuators, such as electron temperature and electron density^[1–9].

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Ye Yuan, Yan Zhang, Cheng Guo, Xiaolu Kang, Zhong Yan, Xiaoping Huang, Qing Zhao. Optical analysis method for fast plasma characterization of high-speed miniaturized synthetic jet[J]. Chinese Optics Letters, 2022, 20(7): 073001

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