Precise measurements the broadening characteristics and parameters of methane near-infrared absorption spectrum at high pressure

doi:10.11972/j.issn.1001-9014.2020.06.012

HFCAS OpenIR

	Precise measurements the broadening characteristics and parameters of methane near-infrared absorption spectrum at high pressure
	He Ying1 ; Zhang Yu-Jun1,2 ; You Kun1 ; Fan Bo-Qiang 1,2; Li Meng-Qi 1,2; Yu Dong-Qi 1,2; Xie Hao 1,2; Lei Bo-En 1,2; Jia Wei 3; Jing Jun-Sen 3; Liu Wen-Qing1,2
	2020-12-01
发表期刊	JOURNAL OF INFRARED AND MILLIMETER WAVES
ISSN	1001-9014
通讯作者	Zhang Yu-Jun(yjzhang@aiofm.ac.cn)
摘要	The high-pressure absorption spectrum at 6046. 96 cm(-1) of methane was obtained with the measurement experimental platform. The empirical mode decomposition algorithm was used to filter out the detection noise caused by window deformation at high-pressure. Consequently,the overall root-mean-square error(RMSE)of absorbance signal was reduced by 3. 87 times,and the residual error of absorbance signal fitting was lower than +/- 1% by using Lorentz line-type fitting algorithm. These studies showed that the absorption line width increased with the pressure increasing,and the mutual broadening coefficient of nitrogen-methane molecules at high-pres. sure was calculated as 0. 0631 cm(-1)atm(-1). Moreover,the absorption line appeared a "red shift" phenomenon as the pressure increasing,and the pressure shift coefficient of nitrogen-induced was calculated as -0. 00848 cm(-1)atm(-1). Therefore,a method of concentration inversion at high pressure was proposed by the linear relationship between the detection wavelength, pressure,and pressure shift coefficient. In conclusion,the research on spectrum broadening characteristics in high-pressure environment lays foundation for spectrum detecting in industrial environment.
关键词	laser absorption spectroscopy spectrum broadening characteristics empirical mode decomposition algorithm high pressure methane pressure shift
DOI	10.11972/j.issn.1001-9014.2020.06.012
关键词[WOS]	SPECTROSCOPY
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[4180512] ; Key Research and Development Projects of Anhui Province[201904a07020093] ; Natural Science Foundation of Anhui Province[1808085MD107] ; Natural Science Foundation of Anhui Province[1808085QD113] ; Key Project of University Natural Science Research Project of Anhui Province[KJ2019A0793] ; Research Project of Anhui Jianzhu University[JZ192037]
项目资助者	National Natural Science Foundation of China ; Key Research and Development Projects of Anhui Province ; Natural Science Foundation of Anhui Province ; Key Project of University Natural Science Research Project of Anhui Province ; Research Project of Anhui Jianzhu University
WOS研究方向	Optics
WOS类目	Optics
WOS记录号	WOS:000603449000012
出版者	SCIENCE PRESS
引用统计
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/119579
专题	中国科学院合肥物质科学研究院
通讯作者	Zhang Yu-Jun
作者单位	1.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Environm Opt & Technol, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Peoples R China 3.Anhui Jianzhu Univ, Coll Mech & Elect Engn, Hefei 230601, Peoples R China
第一作者单位	中科院安徽光学精密机械研究所
通讯作者单位	中科院安徽光学精密机械研究所
推荐引用方式 GB/T 7714	He Ying,Zhang Yu-Jun,You Kun,et al. Precise measurements the broadening characteristics and parameters of methane near-infrared absorption spectrum at high pressure[J]. JOURNAL OF INFRARED AND MILLIMETER WAVES,2020,39.
APA	He Ying.,Zhang Yu-Jun.,You Kun.,Fan Bo-Qiang.,Li Meng-Qi.,...&Liu Wen-Qing.(2020).Precise measurements the broadening characteristics and parameters of methane near-infrared absorption spectrum at high pressure.JOURNAL OF INFRARED AND MILLIMETER WAVES,39.
MLA	He Ying,et al."Precise measurements the broadening characteristics and parameters of methane near-infrared absorption spectrum at high pressure".JOURNAL OF INFRARED AND MILLIMETER WAVES 39(2020).