Optical Investigation on Generation and Propagation of Single Needle Plasma Jet

LI Yong-hui; GAN Yan-biao; DONG Li-fang

doi:10.3788/fgxb20183910.1405

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Optical Investigation on Generation and Propagation of Single Needle Plasma Jet

更新时间：2020-08-12

- Optical Investigation on Generation and Propagation of Single Needle Plasma Jet
- Chinese Journal of Luminescence Vol. 39, Issue 10, Pages: 1405-1409(2018)
- 作者机构：
  
  1. 河北大学物理科学与技术学院,河北保定,071002
  2. 北华航天工业学院基础部,河北廊坊,065000
- 作者简介：
- 基金信息：
  
  Supported by National Natural Science Foundation of China(11602162,11875001);Hebei
- DOI：10.3788/fgxb20183910.1405
  CLC： O461.2
- Received：20 January 2018，
  
  Revised：22 March 2018，
  
  Published Online：21 May 2018，
  
  Published：05 October 2018
- 稿件说明：
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李永辉, 甘延标, 董丽芳. 利用光学方法研究单针射流等离子体的产生和发展机制[J]. 发光学报, 2018,39(10): 1405-1409

LI Yong-hui, GAN Yan-biao, DONG Li-fang. Optical Investigation on Generation and Propagation of Single Needle Plasma Jet[J]. Chinese Journal of Luminescence, 2018,39(10): 1405-1409
李永辉, 甘延标, 董丽芳. 利用光学方法研究单针射流等离子体的产生和发展机制[J]. 发光学报, 2018,39(10): 1405-1409 DOI： 10.3788/fgxb20183910.1405.

LI Yong-hui, GAN Yan-biao, DONG Li-fang. Optical Investigation on Generation and Propagation of Single Needle Plasma Jet[J]. Chinese Journal of Luminescence, 2018,39(10): 1405-1409 DOI： 10.3788/fgxb20183910.1405.

摘要

对单针电极射流等离子体产生和发展过程中的光信号进行了研究。首先发现等离子体的长度并不是随外加电压升高而增加，而是和驱动电源的能量在正半周放电脉冲之间的分配有关。通过研究等离子体通道内不同位置的发光信号，发现正半周期第一次放电脉冲是在针尖电极处产生，而第二个脉冲是在等离子体通道中部产生，电子激发温度也是在等离子体中部达到最高。通过分析发现，空间电荷产生的附加电场对于等离子体的产生和发展有着重大影响。

Abstract

The light signal in the generation and propagation of plasma jet produced by the single needle electrode was studied. It is found that the length of plasma jet does not increase with the applied voltage

but relates to the distribution of energy between pulse discharges(PD) in the positive half-cycle. The first PD is produced at the needle electrode

the second PD is produced in the middle of plasma channel where the electron excitation temperature reaches its highest value. We conclude that the additional electric field generated by space charge has great influence on the generation and development of plasma jet.

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Keywords

references

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