微等离子器件亮度随电流变化的阶梯现象

The Step Phenomenon Of Luminance-Current Characteristics Of Microplasma Decvices

微等离子体器件具有放电空间尺寸很小、放电气体的压强接近大气压的特点,表现出不同于常规等离子体放电器件的特性,近年来作为一种新型放电发光器件受到国际上的广泛关注。本实验主要研究共面电极微等离子体器件在不同氖气气压下、正弦波驱动电路下,共面电极微等离子体器件的发光亮度与放电电流之间的关系。实验结果表明,在正弦波驱动电路下,氖气气压小于等于50k Pa时,线阵列共面电极微等离子体器件发光亮度随放点电流均方根呈阶梯状上升;氖气气压大于60k Pa时,线阵列共面电极微等离子体器件发光亮度随放电电流均方根增长近似于线性增加。

Microplasma devices with a very small discharge space under high pressure close to the atmospheric pressure,show some special luminance-current characteristics comparing with conventional plasma,and attach widespread attention in recent years. This work is to develop the relationship between luminance and current of coplanar microplasma devices under different neon 25 gas pressure with AC sinusoidal voltage driving circuit. The results of experiments show that there is the step phenomenon of luminance-current characteristics of line array of coplanar microplasma devices when the AC sinusoidal voltage driving circuit and neon gas pressure is less than or equal to 50kPa and the luminance of increase linearly with the discharge current increasing when neon gas pressure is higher than 60kPa.