Research on obtaining temperature by using the relative intensity of the hydroxyl radical spectrum in the ultraviolet band

Qiang Lv; Lu Bai; Jinyu Xie; Yankun Wang; Danmeng Zhang

doi:10.1117/12.2585778

12 March 2021 Research on obtaining temperature by using the relative intensity of the hydroxyl radical spectrum in the ultraviolet band

Qiang Lv, Lu Bai, Jinyu Xie, Yankun Wang, Danmeng Zhang

Author Affiliations +

Proceedings Volume 11763, Seventh Symposium on Novel Photoelectronic Detection Technology and Applications; 117630L (2021) https://doi.org/10.1117/12.2585778
Event: Seventh Symposium on Novel Photoelectronic Detection Technology and Application 2020, 2020, Kunming, China

Abstract

In the plume spectrum of hydrogen-oxygen fuel, the radiation spectrum of hydroxide radical (OH) is an obvious feature in the ultraviolet (UV) band. Since the control temperature can be determined by the relative intensity of a single transition, the Hitran database is used to analyze the OH spectrum structure, then two sets of temperature-sensitive peaks are found, corresponding to the OH (A² Σ,v' = 0→X² Π,v'' = 0) and OH (A² Σ,v' =1→X² Π,v'' =1) transitions, respectively. The law of the two groups of peaks with temperature is analyzed in the temperature range of 600-3300K, and the method of determining the control temperature can be obtained by knowing the relative intensity, which provides a way for the temperature inversion in the ultraviolet band.

Citation Download Citation

Qiang Lv, Lu Bai, Jinyu Xie, Yankun Wang, and Danmeng Zhang "Research on obtaining temperature by using the relative intensity of the hydroxyl radical spectrum in the ultraviolet band", Proc. SPIE 11763, Seventh Symposium on Novel Photoelectronic Detection Technology and Applications, 117630L (12 March 2021); https://doi.org/10.1117/12.2585778

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