摘要
目前低温等离子体得到了广泛的应用,而电子密度作为等离子体的一个重要参数引起了许多研究者的兴趣。在等离子体诊断领域应用最广泛的一种方法就是光谱法,它具有无干扰,精度高,响应时间快的优点。我们通过搭建实验平台,在水中进行火花放电得到等离子体并测定放电光谱。通过对Ha(656.3nm)谱线的光谱数据进行洛伦兹拟合得到斯塔克展宽,由斯塔克展宽可以计算得到得电子密度。我们经过计算得到了在脉冲电压从6kV到10kV过程中水中放电等离子体电子密度,其数量级保持在1017cm-3,而等离子体的温度大致在10000-16000之间。本文给出了测定水中火花放电等离子体密度算法及流程可供相关研究参考。
At present,low temperature plasma has been widely used,and electron density has attracted many researchers’interest as an important parameter of plasma.One of the most widely used methods in plasma diagnostics is spectroscopy,which has the advantages of no interference,high precision,and fast response time.We set up an experimental platform to generate a plasma in a spark discharge in water and capture the discharge spectrum.Stark broadening is obtained by Lorentz fitting of the spectral data of the H line and the electron density can be calculated from the Stark broadening.We calculated the electron density of the discharge plasma in the process of pulse voltage from 6kV to 10kV,the order of which is maintained at 1017 cm-3,and the plasma temperature is roughly between 10,000-16000.In this paper,the algorithm and process for determining the plasma density of spark discharge in water are given for reference.
作者
钟增达
ZHONG Zeng-da(College of Electrical Engineering and Automation,Fuzhou University,Fuzhou 350108,China)
出处
《电气开关》
2020年第3期97-99,共3页
Electric Switchgear
关键词
火花放电
等离子体
光谱法
电子密度
温度
speak discharge
plasm body
spectum method
electron density
temperature
