66116618 cm-1之间氨气光谱线强的测量

聂伟; 阚瑞峰; 许振宇; 杨晨光; 陈兵; 夏晖晖; 魏敏; 陈祥; 姚路; 李杭; 范雪丽; 胡佳屹

doi:10.7498/aps.66.054207

摘要

在可调谐半导体激光吸收光谱（TDLAS）技术中，目标气体分子的吸收光谱参数，尤其是线强对温度、浓度的精确反演测量具有重要作用.HITRAN/GEISA/HITEMP等数据库中的光谱参数包含理论计算的结果，与实际情况存在相当的误差.本文采用TDLAS-波长扫描直接吸收技术测量了室温下氨气在6611-6618 cm-1之间的吸收光谱，利用Voigt线型多峰拟合方法获得了20条谱线在不同压强下的积分吸光度值，将获得的不同压强下的积分吸光度值进行线性拟合计算测量温度下的线强值，同时通过不确定度分析及误差传递计算了实验线强值的不确定度.通过与HITRAN 2012数据库中值进行对比，得出氨气在6611-6618 cm-1波段实验线强值与数据库中值相差0.51%-17.28%，且实验线强值的不确定度在0.81%-3.3%范围，小于HITRAN2012中线强的不确定度5%-10%范围.

关键词:

Abstract

The target gas molecular absorption spectrum parameters especially line strengths are very important for measuring temperature and concentration with tunable diode laser absorption spectroscopy (TDLAS) technique. Usually, researchers use line strengths which come from spectrum database, like HITRAN and GEISA and HITEMP spectra database, but those database include values from the theoretical computation, as is well known, there is a big error between the theoretical value and the actual value. In order to modify the line strengths of the database, 20 ammonia spectrum absorption lines in a wavenumber range between 6611 and 6618 cm-1 are measured at different pressures by using direct tunable diode laser absorption spectroscopy (dTDLAS) technique. The measurement procedure is repeated at least 10 times at each pressure, and then average value is calculated. Voigt fitting is used to obtain all line integral area, and then the line integral area is obtained by linear fitting. The slope of the fitting straight line equals line strength. Uncertainty analysis is given for the measurements. The measured linestrength is a function of integrated area, temperature, pressure, species mole fraction and effective path length. So, the calculated linestrength uncertainties based on those parameters uncertainties, and the uncertainties of pressure, species mole fraction and effective path length are similar for all transitions with P =0.25%, =0.2%, and L =0.4%. The uncertainties of the integrated area and temperature are related to different lines, and their values come from the actual measurement. In the end, uncertainty propagation formula is used to calculate linestrength uncetainty. Uncertainties of our measured line strengths are in a 0.81%-3.33% range. Our measured line strength values are different from line strengths in the HITRAN 2012 database, and the deviations are in 0.51%-17.28% range.

Keywords:

ammonia /
tunable diode laser absorption spectroscopy /
line strengths /
uncertainties

作者及机构信息

1.
中国科学院合肥物质科学研究院, 安徽光学精密机械研究所, 环境光学与技术重点实验室, 合肥 230031;

2.
中国科学技术大学, 合肥 230026

通信作者: 阚瑞峰, kanruifeng@aiofm.ac.cn

基金项目: 国家重大科学仪器设备开发专项（批准号：2014YQ060537）资助的课题.

Authors and contacts

1.
Key Laboratory of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China;

2.
University of Science and Technology of China, Hefei 230026, China

Corresponding author: Kan Rui-Feng, kanruifeng@aiofm.ac.cn

Funds: Project supported by the National Key Scientific Instrument and Equipment Development Project of China (Grant No. 2014YQ060537).

参考文献

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施引文献

[1]	Wang F, Huang Q X, Li N, Yan J H, Chi Y, Cen K F 2007Acta Phys.Sin. 56 3867(in Chinese)[王飞, 黄群星, 李宁, 严建华, 池涌, 岑可法2007 56 3867]
[2]	Yury A B, Anatoliy A K, Gerard W, Frank K T, Terence H R, John D B 2008LACSEA LMB4
[3]	Rafal L, Anatoliy A K, David M T, Terence H R, Steven S, Timothy B S, Frank K T 2011SPIE 7945K1
[4]	Rothman L S, Gordon I E, Babikov Y, et al. 2013J.Quant.Spectrosc.Radiat.Transfer 130 4
[5]	Jacquinet-Husso N, Scott N A, Chdin A, et al. 2008J.Quant.Spectrosc.Radiat.Transfer 109 1043
[6]	Rothman L S, Gordon I E, Barber R J, Dothe H, Gamache R R, Goldman A, Perevalov V I, Tashkun S A, Tennyson J 2010J.Quant.Spectrosc.Radiat.Transfer 111 2139
[7]	Paldus B A, Harb C C, Spence T G, Zare R N, Gmachl C, Capasso F, Sivco D L, Baillargeon J N, Hutchinson A L, Cho A Y 2000Opt.Lett. 25 666
[8]	Manne J, Sukhorukov O, Jger W, Tulip J 2006Appl.Opt. 45 9230
[9]	O'Leary D M, Orphal J, Ruth A A, Heitmann U, Chelin P, Fellows C E 2008J.Quant.Spectrosc.Radiat.Transfer 109 1004
[10]	Barton E J, Yurchenko S N, Tennyson J, Clausen S, Fateev A 2015J.Quant.Spectrosc.Radiat.Transfer 167 126
[11]	Guinet M, Jeseck P, Mondelain D, Pepin I, Janssen C, Camy-Peyret C, Mandin J Y 2011J.Quant.Spectrosc.Radiat.Transfer 112 1950
[12]	Naumenko O V, Bguier S, Leshchishina O M, Campargue A 2010J.Quant.Spectrosc.Radiat.Transfer 111 36
[13]	Webber M E, MacDonald T, Pushkarsky M B, Patel C K N, Zhao Y, Marcillac N, Mitloehner F M 2005Meas.Sci.Technol. 16 1547
[14]	Milton B, da Marcelo G S, Marcelo S S, Delson U S, Helion V, Andras M, Peter H 2006Appl.Opt. 45 4966
[15]	Maddaloni P, Gagliardi G, Malara P, de Natale P 2005Appl.Phys.B 80 141
[16]	Tiwari V B, Singh S, Mishra S R, Rawat H S, Mehendale S C 2006Appl.Phys.B 83 93
[17]	Michael E W, Douglas S B, Ronald K H 2001Appl.Opt. 40 2031
[18]	Xu L H, Liu Z, Yakovlev I, Tretyakov M Y, Lees R M 2004Infrared Phys.Technol. 45 31
[19]	Jia H, Zhao W, Cai T, Chen W, Zhang W, Gao X 2009J.Quant.Spectrosc.Radiat.Transfer 110 347
[20]	Gibb J S, Hancock G, Peverall R, Ritchie G A D, Russell L J 2004Eur.Phys.J.D 28 59
[21]	Sur R, Spearrin R M, Peng W Y, Strand C L, Jeffries J B, Enns G M, Hanson R K 2016J.Quant.Spectrosc.Radiat.Transfer 175 90
[22]	Romh J E, Cacciani P, Taher F, Čermk P, Coslou J, Khelkhal M A 2016J.Mol.Spectrosc. 4 1
[23]	He Y, Zhang Y J, Wang L M, You K 2012Opt.Technol. 38 421(in Chinese)[何莹, 张玉钧, 王立明, 尤坤2012光学技术38 421]
[24]	Schilt S 2010Appl.Phys.B 100 1
[25]	Zhou X 2005Ph.D.Dissertation(California:Stanford University)
[26]	Chen J Y, Liu J G, He Y B, Wang L, Jiang Q, Xu Z Y, Yao L, Yuan S, Ruan J, He J F, Dai Y H, Kan R F 2013Acta Phys.Sin. 62 224206(in Chinese)[陈玖英, 刘建国, 何亚柏, 王辽, 冮强, 许振宇, 姚路, 袁松, 阮俊, 何俊峰, 戴云海, 阚瑞峰2013 62 224206]
[27]	Xu Z Y, Liu W Q, Liu J G, He J F, Yao L, Ruan J, Chen J Y, Li Han, Yuan S, Geng H, Kan R F 2012Acta Phys.Sin. 61 234204(in Chinese)[许振宇, 刘文清, 刘建国, 何俊峰, 姚路, 阮俊, 陈玖英, 李晗, 袁松, 耿辉, 阚瑞峰2012 61 234204]
[28]	Goldenstein C S, Hanson R K 2015J.Quant.Spectrosc.Radiat.Transfer 15 127
[29]	Goldenstein C S, Jeffries J B, Hanson R K 2013J.Quant.Spectrosc.Radiat.Transfer 130 100
[30]	Pogny A Klein A, Ebert V 2015J.Quant.Spectrosc.Radiat.Transfer 165 108

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