Measurements of Electron Density and Electron Temperature of Arc Discharge Plasmas Containing Metallic Vapors Using Laser Thomson Scattering

被引:3
|
作者
Tomita, Kentaro [1 ]
Yoshitake, Shinya [2 ]
Uchino, Kiichiro [3 ]
Takenaka, Daigo [4 ]
Toda, Hiroaki [5 ]
Hikita, Masayuki [5 ]
Suzuki, Katsumi [6 ]
机构
[1] Kyushu Univ, Interdisciplinary Grad Sch Engn Sci, PhD Program, Fukuoka 812, Japan
[2] Kyushu Univ, Interdisciplinary Grad Sch Engn Sci, ME Program, Fukuoka 812, Japan
[3] Kyushu Univ, Fukuoka 812, Japan
[4] Kyushu Inst Technol, Kitakyushu, Fukuoka, Japan
[5] Kyushu Inst Technol, Fac Engn, Kitakyushu, Fukuoka, Japan
[6] Toshiba Co Ltd, Power & Ind Syst Res & Dev Ctr, Tokyo, Japan
关键词
Thomson scattering; gas circuit breaker; arc discharge; electron density; electron temperature; metallic vapor; CURRENT-ZERO BEHAVIOR; GAS-BLAST ARC; AIR;
D O I
10.1002/eej.22635
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Laser Thomson scattering (LTS) was applied to arc discharges generated in the atmosphere to measure electron density (ne) and electron temperature (Te). The electrode gap was 0.8 mm, and the electrode diameter was 1 mm. The applied voltage was 6 kV, the peak current was 600 A, and the decay time of the voltage and current was 25 s. The spatiotemporal evolution of ne and Te was measured 10, 30, and 50 s after discharge initiation. At these times, the obtained values of ne and Te were estimated to be in the ranges of (0.8 to 2.0) x 1023 m-3 and 1.0 to 2.2eV, respectively. These values were consistent with those evaluated using Saha's thermodynamic equation at 1 atm. It was also found that the decay of the arc discharge produced using the tungsten-copper electrodes was much faster than that produced using the tungsten electrodes.
引用
收藏
页码:1 / 8
页数:8
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