| 三探针方法脉冲放电等离子体特性 |
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| 引用本文： | 陈磊,杨林,万翔,金大志,向伟,谈效华.三探针方法脉冲放电等离子体特性[J].强激光与粒子束,2015,27(4):045007. |
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| 作者姓名： | 陈磊 杨林 万翔 金大志 向伟 谈效华 |
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| 作者单位： | 1.中国工程物理研究院 电子工程研究所, 四川 绵阳 621 900 |
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| 摘 要： | 基于三探针方法开展了脉冲放电等离子体特性研究,实现了单次脉冲放电等离子体参数的时变特性诊断。采用金属罩屏蔽、示波器锂电池供电等方法降低了电磁信号干扰,利用Labview编制了特定的程序进行三探针诊断数据处理。根据脉冲放电等离子体具有多电荷态离子成分、离子超声速运动等特点,对三探针理论进行相应修正。诊断结果表明,整个放电脉冲内高压引出界面电子温度Te处于2~4eV之间,离子密度ni处于1017~1018 m-3量级之间,与Langmuir单探针诊断结果吻合。
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| 关 键 词： | 脉冲等离子体 三探针 超声速扩散 电子温度 离子密度 |
| 收稿时间： | 2014-11-05 |
Characteristics of pulsed discharge plasma using triple probe |
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| Affiliation: | 1.Institute of Electronic Engineering,CAEP,P.O.Box 919-518,Mianyang 621900,China |
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| Abstract: | The characteristics of the pulsed plasma have been measured using the triple probe method, and the temporal evolution of the plasma characteristics has been diagnosed in a single pulse. Electromagnetism disturbance has been controlled by metal shield and battery power supply for oscillograph. A code has been made to deal with data of triple probe method based on Labview. According to the characteristics of mixed ion components and supersonic ion velocities for pulsed plasma, the theory of the triple probe has been revised. Results show that during the pulse discharge time, the electron temperature Te is between 2-4 eV and the ion density ni is between 1017-1018 m-3 at the high voltage extraction interface, which is consistent with Langmuir single probes results. |
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