| 光谱学与光谱分析 |
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| The Correction to Spectroscopic Diagnostics of Plasma Jet with Air Engulfment |
| ZHAO Wen-hua，TANG Huang-zai，TIAN Ｋuo，ZHANG Guan-zhong |
| Department of Engineering Mechanics，Tsinghua University，Beijing 100084，China |
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Abstract A high-resolution, multi-line spectroscopic diagnostic system was used to detect two spectral line intensities in plasma jet simultaneously. The temperature profiles of an arc plasma jet issued into atmosphere and the concentrations of the air engulfment in the plasma jet were experimentally determined by means of the line absolute intensity method in this paper. The temperature profiles were obtained in two cases: the air engulfment in the plasma jet being considered and not being considered. The comparison of temperatures obtained in these two cases illustrates that the air engulfment in the plasma jet has considerable influence on spectroscopic diagnostic results. The neglect of the air engulfment brings on error in the temperature diagnostics with the absolute line intensity method. Especially in the region far away from the exit of the nozzle, the error is obvious.
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Received: 2002-11-18
Accepted: 2003-06-06
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Corresponding Authors:
ZHAO Wen-hua
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| Cite this article: |
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ZHAO Wen-hua,TANG Huang-zai,TIAN Ｋuo, et al. The Correction to Spectroscopic Diagnostics of Plasma Jet with Air Engulfment [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2004, 24(04): 388-391.
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| URL: |
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http://www.gpxygpfx.com/EN/Y2004/V24/I04/388 |
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