摘要
无极灯(electrodeless discharge lamp,EDL)是一种基于高频电磁感应和无极气体放电的新型电光源,由电感耦合等离子体(ICP)中的Hg 253.7nm共振谱线激发荧光粉进而发出可见光。为研究放电参数对无极灯发光特性的影响,首先,结合Maxwell 3D有限元仿真,理论分析了无极灯的发光机理;其次,基于无极放电实验系统,通过原子发射光谱分析,实验研究了冷端温度、气体压力、输入功率等放电参数对Hg 253.7nm共振谱线及ICP可见辐射的影响。研究表明,Hg 253.7nm共振谱线的相对强度随冷端温度、气体压力、输入功率均呈现出近似于正态分布的变化规律,可见光照度则随冷端温度的升高而增加,并从气体放电的角度进行了定性分析,这对无极灯光效的提高具有重要意义。
As a kind of new electric light source,electrodeless discharge lamps（EDL） are based on high-frequency electromagnetic induction and non-polar gas discharge.Visible light is emitted as a result of Hg 253.7 nm resonance spectrum line inspiring phosphor.In order to study the influence of discharge parameters on the luminescence characteristics of EDL,firstly,the luminescence mechanism of EDL is theoretically analyzed,combined with the finite element simulation of Maxwell 3D.Then,the influences of discharge parameters such as cold spot temperature,gas pressure and input power on Hg 253.7 nm line and ICP visible radiation are experimentally studied by atomic emission spectral analysis.It is found that the relative intensity of Hg 253.7 nm line is distributed in a nearly normal fashion with the variation of three parameters separately,and visible illuminance increases with cold temperature.The results are qualitatively analyzed by gas discharge theory,which is important to the improvement of EDL＇ lighting effect.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2011年第3期770-776,共7页
High Voltage Engineering
关键词
无极灯
电感耦合等离子体
气体放电
共振谱线
放电参数
有限元
光谱分析
光效
electrodeless discharge lamps
ICP
gas discharge
resonance spectrum line
discharge parameters
finite element
spectral analysis
lighting effect
