摘要
对大气压下电晕电离层的离子运动规律进行了实验研究。实验结果表明:在电晕放电的流光或辉光放电区域,电离电场强度、注入功率密度、电离能密度等参量对等离子体输运项的影响程度仅在1个数量级内;在电离能密度达到0.4mJ.cm-3,气体速度从1.5m.s-1提高到25m.s-1时,离子输运率相应从5.4×108cm-3.s-1增加到8×1010cm-3.s-1,提高了近2个数量级。带电粒子的动量对离子浓度及输运的影响远大于电离电场强度、注入功率密度等的影响。
Ion movement law in corona discharge at atmospheric pressure has been studied. Experiment results show that ionization electric field intensity, power density and ionization energy density have limited influence upon plasma transport rate in a order of magnitude in the stream or glow discharge area of corona discharge. When the speed of gas is from 5m·s^-1 to 25m·s^-1 with 0.4mJ·cm^-3 ionization energy density, the transportation rate is from 5.4 ×10^8cm^-3·s^-1 to 8 ×10^10cm^-3·s^-1, almost increases in two orders of magnitude. The effect of momentum of charged particles on concentration and transport rate of ions is far greater than that of electric field, input power density and energy.
出处
《核聚变与等离子体物理》
EI
CAS
CSCD
北大核心
2005年第4期311-314,共4页
Nuclear Fusion and Plasma Physics
基金
国家自然科学基金资助项目(60471036)
关键词
大气压
电晕放电
气体电离
输运特性
Atmospheric pressure
Corona discharge
Gas ionization
Transportation characteristic
