Spectroscopic,electrical diagnostics of dual-power electrodes atmospheric pressure argon plasma plume discharge characteristics
In this paper, an atmospheric pressure argon plasma plume generated by sinusoidal power input of moderate frequency (kHz range) and designed with dual-power electrodes is characterized and studied.Particularly, the effect of driving frequency in the 60-130 kHz range on the argon plasma discharge characteristics is investigated based on a detailed electrical and spectroscopic diagnostics.And, temporal and spatial optical emission spectroscopy is used to measure the plasma parameters, of which the excitation electron temperature is determined by the Boltzmanns plot method whereas the electron density is estimated using the stark broadening of the hydrogen Balmer Hβ line.It is shown that at constant applied voltage and gas flow rate, the increase of driving frequency in the range of 60-100 kHz exerts no significant influences on discharge parameters.While once the driving frequency exceeds a certain value of about 100 kHz, the discharge becomes intense abruptly and the corresponding discharge parameters increase drastically with the driving frequency.Detailed analysis about the effect of driving frequency on discharge characteristics is presented and two different dominant electron loss mechanisms, namely transport-dominated loss and diffusion-dominated loss, are prolposed to account for the distinct effects of the driving frequency on argon discharge characteristics.
plasma sources driving frequency plasma properties optical emission spectroscopy
Muyang Qian Lin Yang Dazhi Jin Xiaohua Tan
Institute of Electronic Engineering,China Academy of Engineering Physics,MianYang,China 621900 Institute of Nuclear Science and Technology,Lanzhou University,Lanzhou,China 730000
国际会议
The 2nd International Symposium on Laser Interaction with Matter (LIMIS 2012)第二届激光与物质相互作用国际会议
西安
英文
264-271
2012-09-09（万方平台首次上网日期，不代表论文的发表时间）