Influence Analysis of Spectral Line-Shape Models on Spectral Diagnoses Under High-Temperature Conditions

doi:10.3964/j.issn.1000-0593(2023)09-2715-07

HFCAS OpenIR

	Influence Analysis of Spectral Line-Shape Models on Spectral Diagnoses Under High-Temperature Conditions
	Zeng Si-xian 1; Ren Xin 1; He Hao-xuan 1; Nie Wei 1,2
	2023-09-01
发表期刊	SPECTROSCOPY AND SPECTRAL ANALYSIS
ISSN	1000-0593
通讯作者	Nie Wei(niewei@scut.edu.cn)
摘要	To achieve high-precision spectral retrieval under high-temperature conditions, we compared and analyzed the accuracy and stability of seven different spectral line-shape profiles and developed a spectral line-shape profile selection strategy suitable for high-temperature diagnosis. Firstly, two H2O absorption spectra in the temperature range of 1 100 similar to 1 600 K were measured experimentally, and seven different spectral profiles were used to fit them respectively. The integral absorbance, velocity-dependent line-width and Doppler half height and half-width (FWHM) of each measured spectrum were obtained, and the gas temperature value was calculated according to the line-intensity ratio method. The comparative analysis show that under the condition of high temperature and atmospheric pressure, the fitting accuracy of the Gaussian profile is the worst, and the gas temperature inversion accuracy of the Gaussian profile is the highest; Setting the Doppler half-height width parameter in the line-shape profile as a constant can not only effectively improve the stability and accuracy of spectral line parameter inversion, but also improve the temperature inversion accuracy of each spectral line-shape profile. Compared with the non-Voigt profile (speed-dependent Voigt profile, Rautian profile, Speed-dependent Rautian profile and Hartman tran profile), the integral absorbance and velocity-dependent line-width obtained by the Voigt profile are small, and the relative error of calculated temperature are large. Finally, the running time of seven line-shape profile fitting programs was compared. Under the condition of ensuring accuracy, the speed-dependent Voigt profile calculation speed is the fastest. Therefore, the gas temperature is obtained by Gaussian Profile. The Doppler half height and half width are calculated according to the temperature and fixed as a constant, and the speed-dependent Voigt profile is used to fit the measured spectrum, which can effectively improve the inversion accuracy, velocity and stability of high-temperature spectrum.
关键词	Spectral line-shape profile TDLAS Integral absorbance Speed-averaged line-width Doppler HWHM (Half-width-at-half-maximum) Temperature
DOI	10.3964/j.issn.1000-0593(2023)09-2715-07
关键词[WOS]	DEPENDENT LINESHAPE PARAMETERS ; DIODE-LASER MEASUREMENTS ; H2O TRANSITIONS ; ABSORPTION ; VOIGT ; LINESTRENGTH ; GALATRY ; CO2
收录类别	SCI
语种	英语
WOS研究方向	Spectroscopy
WOS类目	Spectroscopy
WOS记录号	WOS:001064031800010
出版者	OFFICE SPECTROSCOPY & SPECTRAL ANALYSIS
引用统计
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/133521
专题	中国科学院合肥物质科学研究院
通讯作者	Nie Wei
作者单位	1.South China Univ Technol, Sch Elect Power, Guangzhou 510641, Peoples R China 2.Chinese Acad Sci, Hefei Inst Phys Sci, Anhui Inst Opt & Fine Mech, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Zeng Si-xian,Ren Xin,He Hao-xuan,et al. Influence Analysis of Spectral Line-Shape Models on Spectral Diagnoses Under High-Temperature Conditions[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2023,43.
APA	Zeng Si-xian,Ren Xin,He Hao-xuan,&Nie Wei.(2023).Influence Analysis of Spectral Line-Shape Models on Spectral Diagnoses Under High-Temperature Conditions.SPECTROSCOPY AND SPECTRAL ANALYSIS,43.
MLA	Zeng Si-xian,et al."Influence Analysis of Spectral Line-Shape Models on Spectral Diagnoses Under High-Temperature Conditions".SPECTROSCOPY AND SPECTRAL ANALYSIS 43(2023).