Line positions and effective line strengths of trans-HONO near 1280 cm-1

被引：0
作者：
Cui, Xiaojuan [1 ,2 ]
Li, Yafan [1 ,2 ]
Jiang, Chaochao [1 ,2 ]
Cui, Xiaohan [1 ,2 ]
Xie, Jingming [2 ]
Yu, Benli [1 ,2 ]
机构：
[1] Anhui Univ, Inst Phys Sci & Informat Technol, Informat Mat & Intelligent Sensing Lab Anhui Prov, Hefei 230601, Peoples R China
[2] Anhui Univ, Key Lab Optoelect Informat Acquisit & Manipulat, Minist Educ, Hefei 230601, Peoples R China
来源：
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2023年 / 302卷
基金：
中国国家自然科学基金;
关键词：
Quantum cascade laser; HONO; Tunable laser absorption spectroscopy; Line strength; NITROUS-ACID HONO; ABSORPTION CROSS-SECTIONS; DENUDER MEASUREMENTS; ATMOSPHERIC HONO; 1255 CM(-1); NO2; INTENSITIES; SHANGHAI; BAND;
D O I：
10.1016/j.saa.2023.123044
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
The measurement of the line positions and effective line strengths of the & nu;3 fundamental band of trans-nitrous acid (trans-HONO) near 1280 cm-1 (7.8 & mu;m) by tunable laser absorption spectroscopy (TLAS) utilizing a room temperature continuous-wave quantum cascade laser (cw-QCL) was reported. The effective line strengths of 30 well-resolved trans-HONO absorption lines in the range of 1279.8-1282.2 cm- 1 were determined using the HONO line strength at 1280.3841 cm-1 as a scale. The maximum measurement uncertainty of 7.64% in the line strengths is mainly determined by the uncertainty of the referenced line strength, while the measurement precision of the line positions is better than 5.56 * 10-3 cm- 1. The line positions and strengths of the trans-HONO absorption lines obtained in this work provide a reference for continuous gas monitoring and analysis of the sources and sinks of atmospheric HONO.
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页数：8
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