常压下低温等离子体光辐射特性测量

Experiment on Optical Radiation Characteristic of Low Temperature Plasma at Atmospheric Pressure

采用常压空气辉光放电(APGD)技术在自行设计的电极板表面产生出一薄层低温等离子体,并利用光谱诊断光学系统对所产生的等离子体进行光辐射特性实验测量;实验获取了几种电极板在几个不同加载功率下的辐射光谱,并对光谱的辐射强度进行平均化处理分析。分析结果表明此沿面APGD的光辐射强度与加载功率之间存在线性增加的关系,且随电极板静态电容的增加而增强。该方法可以为控制APGD等离子体的产生量提供一种简便可行的途径。

The experiment on the optical radiation performance of a low temperature plasma due to atmospheric pressure glow discharge （APGD） in air was carried out in the present paper. A set of APGD devices were created successful.ly and a thin layer of plasma can be produced on the planar surface of designed electrode plate. The measurement was carried out on the optical radiation characteristic of the plasma with a grating spectrograph system. The investigation was made to several different electrode plates. The radiation spectra of several electrode plates with different power loaded were acquired. The data obtained show that the APGD optical radiation intensity grows linearly with the applied power, and increases with the static capacitance of the electrode plate. The study proves that it is feasible to control APGD plasma quantitatively and effectively by using the obtained relationship.