1. Absorption spectroscopy of ethylene near 1.62 µm at high temperatures.
- Author
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Zhang, Gang, Gao, Guangzhen, Zhang, Ting, Liu, Xin, Peng, Changde, and Cai, Tingdong
- Subjects
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HIGH temperatures , *DISTRIBUTED feedback lasers , *TUNABLE lasers , *ETHYLENE , *SEMICONDUCTOR lasers , *SPECTRUM analysis , *QUANTUM cascade lasers - Abstract
• The high-resolution spectra of C 2 H 4 at 1.62 µm are acquired in the temperature range of 296–600 K. • More than 50 lines are recorded in the frequency range 6167.39 to 6177.71 cm−1. • Line positions, line intensities, self-broadening coefficients and its temperature exponent n for those lines are determined by multi-line fitting using Voigt profile. We report the measured line positions, line intensities, self-broadening coefficients and its temperature exponent n of C 2 H 4 for more than 50 lines in the frequency range 6167.39 to 6177.71 cm−1. These spectroscopic parameters were determined by multi-line fitting using the Voigt profile of absorption spectra measured with a distributed-feedback (DFB) tunable diode laser in a well-controlled heated static absorption cell in a temperature range of 296–600 K. The key factors influencing the uncertainties in the determination of the line intensities and self-broadening coefficients were analyzed respectively. To the best of our knowledge, this is the first study that measures the spectrum of C 2 H 4 near 1.62 µm and the line parameters at elevated temperature. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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