低压下直流电弧热等离子体射流电子密度的光谱法测量

孙成琪; 高阳; 杨德明; 傅迎庆

doi:10.3788/fgxb20153601.0088

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低压下直流电弧热等离子体射流电子密度的光谱法测量

器件制备及器件物理 | 更新时间：2020-08-12

- 低压下直流电弧热等离子体射流电子密度的光谱法测量
- Spectroscopic Method for Measurement of Electron Number Density on DC Arc Plasma Jet Under Low Pressure Conditions
- 发光学报 2015年36卷第1期页码：88-93
- 作者机构：
  
  1. 大连海事大学交通运输装备与海洋工程学院,辽宁大连,116026
  2. 广东海洋大学航海学院,广东湛江,524088
- 作者简介：
- 基金信息：
  
  国家自然科学基金(51172033)();大连海事大学船机修造工程交通行业重点实验室开放课题(CJXZ201303)();中央高校基本科研业务费专项资金 (313201
- DOI：10.3788/fgxb20153601.0088
  中图分类号： TG403
- 纸质出版日期：2015-1-3，
  
  收稿日期：2014-10-18，
  
  修回日期：2014-11-20，
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孙成琪, 高阳, 杨德明等. 低压下直流电弧热等离子体射流电子密度的光谱法测量[J]. 发光学报, 2015,36(1): 88-93

SUN Cheng-qi, GAO Yang, YANG De-ming etc. Spectroscopic Method for Measurement of Electron Number Density on DC Arc Plasma Jet Under Low Pressure Conditions[J]. Chinese Journal of Luminescence, 2015,36(1): 88-93
孙成琪, 高阳, 杨德明等. 低压下直流电弧热等离子体射流电子密度的光谱法测量[J]. 发光学报, 2015,36(1): 88-93 DOI： 10.3788/fgxb20153601.0088.

SUN Cheng-qi, GAO Yang, YANG De-ming etc. Spectroscopic Method for Measurement of Electron Number Density on DC Arc Plasma Jet Under Low Pressure Conditions[J]. Chinese Journal of Luminescence, 2015,36(1): 88-93 DOI： 10.3788/fgxb20153601.0088.

摘要

采用原子发射光谱仪研究低压直流电弧热喷涂等离子体射流的特性。利用Stark展宽法采集H

谱线

使用其

1/2

来计算等离子射流中的电子密度

研究了氢气流量、输入功率和探测距离对等离子体射流中电子密度的影响。使用Saha方程计算热等离子体的电离程度

研究了功率/氢气流量与等离子体电离程度的关系。结果表明:电子密度和电离程度随着电流强度的增大而增加;氢气流量增加可以明显提高等离子体射流的能量

但对电离程度影响不大。

Abstract

The characteristics of the low pressure direct current arc thermal spray plasma jet were analyzed by using optical emission spectra. The effects of different power levels

flow rates of H

and detection distance on the electron number density of the thermal spray plasma jet were investigated. The electron number density of the plasma jet was determined using

1/2

of H

(486.13 nm) line. At the same time

the degree of ionization was analyzed using Saha equation

and the effects of H

flow rate and arc electric current on the degree of ionization were discussed. The results show that the electron number density and ionization degree of the plasma increase with the increasing of the input power

and the increasing of H

flow rate can enhance the energy of the plasma jet

but has a little effect on the degree of ionization.

关键词

热喷涂等离子体发射光谱电离程度电子密度

Keywords

thermal spray plasmaemission spectroscopydegree of ionizationelectron number density

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