Preliminary Study on Diagnostic Techniques for Transient Plasma Generated by Hypervelocity Impact  

作　　者：唐恩凌 张庆明 何远航 张健 

机构地区：[1]School of Equipment Engineering,Shenyang Ligong University,Shenyang 110168,China State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing 100081,China [2]State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing 100081,China [3]School of Equipment Engineering,Shenyang Ligong University,Shenyang 110168,China

出　　处：《Plasma Science and Technology》2008年第6期735-738,共4页等离子体科学和技术（英文版）

基　　金：National Natural Science Foundation of China(No.10772028)

摘　　要：A fast-sweep Langmuir probe （FSLP） diagnostic system was designed and applied to obtain the electron temperature fluctuations of a transient plasma. The diagnostic system consists of a single Langmuir probe driven by a high frequency sinusoidal voltage. The current-voltage I- V characteristics can be recorded by sweeping the voltage and measuring the current with an appropriate circuit. This new instrument is based on a dual channel circuit that compensates for stray capacitance. The current and voltage spectra were acquired from the probe synchronously by a digital oscilloscope. The aim of this work was to apply the FSLP diagnostic system to a time- dependent plasma generated by a hypervelocity impact between the LY12 Aluminum projectile and LY12 Aluminum target.A fast-sweep Langmuir probe （FSLP） diagnostic system was designed and applied to obtain the electron temperature fluctuations of a transient plasma. The diagnostic system consists of a single Langmuir probe driven by a high frequency sinusoidal voltage. The current-voltage I- V characteristics can be recorded by sweeping the voltage and measuring the current with an appropriate circuit. This new instrument is based on a dual channel circuit that compensates for stray capacitance. The current and voltage spectra were acquired from the probe synchronously by a digital oscilloscope. The aim of this work was to apply the FSLP diagnostic system to a time- dependent plasma generated by a hypervelocity impact between the LY12 Aluminum projectile and LY12 Aluminum target.

关 键 词：hypervelocity impact fast-sweep Langmuir probe electron temperature 

分 类 号：O531[理学—等离子体物理]