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Guo H, Li P, Li HP, et al. In situ measurement of the two-dimensional temperature field of a dual-jet direct-current arc plasma. Rev Sci Instrum. 2016;87(3):033502doi: 10.1063/1.4942965.
Guo, H., Li, P., Li, H. P., Ge, N., & Bao, C. Y. (2016). In situ measurement of the two-dimensional temperature field of a dual-jet direct-current arc plasma. The Review of scientific instruments, 87(3), 033502. https://doi.org/10.1063/1.4942965
Guo, Heng, et al. "In situ measurement of the two-dimensional temperature field of a dual-jet direct-current arc plasma." The Review of scientific instruments vol. 87,3 (2016): 033502. doi: https://doi.org/10.1063/1.4942965
Guo H, Li P, Li HP, Ge N, Bao CY. In situ measurement of the two-dimensional temperature field of a dual-jet direct-current arc plasma. Rev Sci Instrum. 2016 Mar;87(3):033502. doi: 10.1063/1.4942965. PMID: 27036772.
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Rev Sci Instrum. 2016 Mar;87(3):033502. doi: 10.1063/1.4942965.

In situ measurement of the two-dimensional temperature field of a dual-jet direct-current arc plasma.

The Review of scientific instruments

Heng Guo, Peng Li, He-Ping Li, Nan Ge, Cheng-Yu Bao

Affiliations

  1. Department of Engineering Physics, Tsinghua University, Beijing 100084, People's Republic of China.
  2. School of Automation, Beijing Institute of Technology, Beijing 100081, People's Republic of China.

PMID: 27036772 DOI: 10.1063/1.4942965

Abstract

In this paper, a real time method for an in situ measurement of the two-dimensional (2-D) temperature filed of thermal plasmas is developed with the combination of the visible image processing technique and the spectroscopic line-ratio method at two specified wavelengths. After the calibration of the gray scale values of the recorded images with the CCD cameras by the emission intensity received using a spectrometer, the 2-D temperature field of the plasma arc-jet can be obtained conveniently based on the derived gray scale values of the CCD images at two specified wavelengths and the formula similar to that of spectroscopic line-ratio method. The experimental results show that the obtained temperature fields of the plasma arc-jet at different times are qualitatively reasonable and consistent with the modeling result. This newly developed method can be employed to measure the transient temperature fields of the plasmas with fluctuations during discharges effectively.

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