光谱学与光谱分析 |
|
|
|
|
|
Research on High Resolution Spectrum Measurements of Methane at 1.65 μm |
WANG Huan, CAO Zhen-song, WANG Zhu-qing, WANG Liu-san, GAO Wei, ZHANG Wei-jun, GAO Xiao-ming* |
Laboratory of Environmental Spectroscopy, Anhui Institute of Optics and Fine Mechanics, Key Laboratory of Atmospheric Components and Optic Transfer, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China |
|
|
Abstract The high resolution spectrum of methane was obtained around 1.65 μm using a tunable DFB diode laser with a long adjustable optical path white·cell (46.36-1 158.90 m) at room temperature through the direct absorption technique. The typical line width of the DFB diode laser is about 10 MHz and the wavelength of DFB laser was calibrated by an optical wavemeter. A total of 259 new absorption lines were studied from 6 043.00 to 6 053.72 cm-1 at five different pressures and optical lengths. All the data were fitted by Gaussian profile, the line intensities, positions and the percent of the statistical standard deviation (σS/S)% of the line intensities were obtained, and the absorption lines which are hard to be distinguished were analyzed in this paper. The weakest absorption line is 4.3×10-27cm-1·(mol·cm-2)-1, while the lines stronger than 3.0×10-24 cm-1·(mol·cm-2)-1 were ignored for their saturated absorption due to the long absorption optical length(788-1 000 m). Meantime, the spectrum shows the abundance of methane weak lines and its extremely complex structure around 1.65 μm. All the lines cannot be found in HITRAN2004 database, and as to our knowledge, they were not reported before by other papers.
|
Received: 2009-06-28
Accepted: 2009-09-29
|
|
Corresponding Authors:
GAO Xiao-ming
E-mail: xmgao@aiofm.ac.cn
|
|
[1] Bobby K Antony, Danielle L Niles, Sarah B Wroblewski, et al. J. Mol. Spectrosc., 2008, 251:268. [2] Brown L R. J. Quant. Spectrosc. Radiat. Transfer, 2005, 96:251. [3] Gabard T. J. Quant. Spectrosc. Radiat. Transfer, 1997, 57:177. [4] Djedjiga Belmiloud, Roland Schermaul, Kevin M Smith, et al. Geophysical Rearch Letters, 2000, 27(22):3703. [5] ZHANG Xiang-hui, CHEN Jin-hai, PENG Qi, et al(张向辉,陈金海,彭 其,等). Spectroscopy and Spectral Analysis(光谱学与光谱分析),2001, 21(3): 257. [6] Liu A W, Kassi S, Campargue A. Chemical Physics Letters, 2007, 447: 16. [7] Fumiyuki Ito, Chemical Physics Letters, 2007, 447: 202. [8] Maddaloni P, Gagliardi G, Malara P, et al. Appl. Phys. B, 2005, 80: 141. [9] Li Z S, Rupinskil M, Zetterberg J, et al. Appl. Phys. B, 2004, 79: 135.
|
[1] |
BAI Xi-lin1, 2, PENG Yue1, 2, ZHANG Xue-dong1, 2, GE Jing1, 2*. Ultrafast Dynamics of CdSe/ZnS Quantum Dots and Quantum
Dot-Acceptor Molecular Complexes[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2024, 44(01): 56-61. |
[2] |
ZHENG Pei-chao, YIN Yi-tong, WANG Jin-mei*, ZHOU Chun-yan, ZHANG Li, ZENG Jin-rui, LÜ Qiang. Study on the Method of Detecting Phosphate Ions in Water Based on
Ultraviolet Absorption Spectrum Combined With SPA-ELM Algorithm[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2024, 44(01): 82-87. |
[3] |
LIU Jia, ZHENG Ya-long, WANG Cheng-bo, YIN Zuo-wei*, PAN Shao-kui. Spectra Characterization of Diaspore-Sapphire From Hotan, Xinjiang[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2024, 44(01): 176-180. |
[4] |
GU Yi-lu1, 2,PEI Jing-cheng1, 2*,ZHANG Yu-hui1, 2,YIN Xi-yan1, 2,YU Min-da1, 2, LAI Xiao-jing1, 2. Gemological and Spectral Characterization of Yellowish Green Apatite From Mexico[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2024, 44(01): 181-187. |
[5] |
ZHENG Ni-na1, 2*, XIE Pin-hua1, QIN Min1, DUAN Jun1. Research on the Influence of Lamp Structure of the Combined LED Broadband Light Source on Differential Optical Absorption Spectrum
Retrieval and Its Removing Method[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(11): 3339-3346. |
[6] |
DUAN Ming-xuan1, LI Shi-chun1, 2*, LIU Jia-hui1, WANG Yi1, XIN Wen-hui1, 2, HUA Deng-xin1, 2*, GAO Fei1, 2. Detection of Benzene Concentration by Mid-Infrared Differential
Absorption Lidar[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(11): 3351-3359. |
[7] |
FANG Zheng, WANG Han-bo. Measurement of Plastic Film Thickness Based on X-Ray Absorption
Spectrometry[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(11): 3461-3468. |
[8] |
HUANG Li, MA Rui-jun*, CHEN Yu*, CAI Xiang, YAN Zhen-feng, TANG Hao, LI Yan-fen. Experimental Study on Rapid Detection of Various Organophosphorus Pesticides in Water by UV-Vis Spectroscopy and Parallel Factor Analysis[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(11): 3452-3460. |
[9] |
WANG Peng1, GAO Yong-bao1*, KOU Shao-lei1, MEN Qian-ni1, ZHANG Min1, HE Tao1, YAO Wei2, GAO Rui1, GUO Wen-di1, LIU Chang-rui1. Multi-Objective Optimization of AAS Conditions for Determination of Gold Element Based on Gray Correlation Degree-RSM Model[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(10): 3117-3124. |
[10] |
WANG Yu1, 2, ZHANG Xian-ke1, 2, TAN Tu1, WANG Gui-shi1, LIU Kun1, SUN Wan-qi3*, QIU Zi-chen4, GAO Xiao-ming1, 2. Research on Moving Observation of Typical Greenhouse Gas Sources in Hefei by Using Off-Axis Integrated Cavity[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(10): 3293-3301. |
[11] |
LI Yu-tang1, WANG Lin-zhu1, 2*, LI Xiang3, WANG Jun1. Characterization and Comparative Analysis of Non-Metallic Inclusions in Zirconium Deoxidized Steel[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(09): 2916-2921. |
[12] |
JIA Yu-ge1, YANG Ming-xing1, 2*, YOU Bo-ya1, YU Ke-ye1. Gemological and Spectroscopic Identification Characteristics of Frozen Jelly-Filled Turquoise and Its Raw Material[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(09): 2974-2982. |
[13] |
YANG Xin1, 2, XIA Min1, 2, YE Yin1, 2*, WANG Jing1, 2. Spatiotemporal Distribution Characteristics of Dissolved Organic Matter Spectrum in the Agricultural Watershed of Dianbu River[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(09): 2983-2988. |
[14] |
CHANG Zhen1, ZHONG Ming-yu2*, SU Jing-ming1, 2, SI Fu-qi1, WANG Yu3, ZHOU Hai-jin1, DOU Ke1, ZHANG Quan1. Study on the Reconstructing the NO2 Gas Distribution in a Vertical Plane Using MAX-DOAS[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(08): 2413-2418. |
[15] |
LIU Xian-yu1, YANG Jiu-chang1, 2, TU Cai1, XU Ya-fen1, XU Chang3, CHEN Quan-li2*. Study on Spectral Characteristics of Scheelite From Xuebaoding, Pingwu County, Sichuan Province, China[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(08): 2550-2556. |
|
|
|
|