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| 1.6微米附近氮气展宽的一氧化碳分子线形的研究 | |
| 引用本文： | 赵欣月,林鸿,杨雷,钱进,李辉,张金涛.1.6微米附近氮气展宽的一氧化碳分子线形的研究[J].计量学报,2017,38(1):13-18. |
| 作者姓名： | 赵欣月 林鸿 杨雷 钱进 李辉 张金涛 |
| 作者单位： | 1. 长春理工大学理学院, 吉林 长春 130022 2. 中国计量科学研究院, 北京 100029 3. 清华大学精密仪器系, 北京 100084 |
| 基金项目： | 国家国际科技合作专项项目 |
| 摘 要： | 基于稳频的光腔衰荡光谱法是近年来发展的一种具有高灵敏度和准确性的测量痕量成分的方法,分子线形是影响光谱法测量成分的关键因素。利用基于稳频的光腔衰荡装置测量了一氧化碳R12(3←0)分子光谱,6种常用的分子线形被用来研究分子吸收光谱参数间的关系,包含压力相关的展宽、吸收峰面积和碰撞变窄效应,以及速度变化压窄和速度相依赖弛豫速率变窄效应的相关联等。研究结果表明pCqSDNGP线形能满足描述CO分子线形的需要。 |
| 关 键 词： | 计量学 一氧化碳 温室气体 光腔衰荡光谱 吸收光谱 |
| 收稿时间： | 2016-10-08 |
Investigation on Line Shape for N2-broadened CO Near 1.6 μm |
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| ZHAO Xin-yue,LIN Hong,YANG Lei,QIAN Jin,LI Hui,ZHANG Jin-tao.Investigation on Line Shape for N2-broadened CO Near 1.6 μm[J].Acta Metrologica Sinica,2017,38(1):13-18. | |
| Authors: | ZHAO Xin-yue LIN Hong YANG Lei QIAN Jin LI Hui ZHANG Jin-tao |
| Affiliation: | 1. Changchun University of Science and Technology, College of Science, Changchun, Jilin 130022, China 2. National Institute of Metrology, Beijing 100029, China 3. Tsinghua University, Department of Precision Instrument, Beijing 100084, China |
| Abstract: | Frequency-stabilized cavity ring-down spectroscopy is developed for tracing gas concentration with very high sensitivity and accuracy in recent years. However, line shape is the key factor affecting the concentration measurement based on the spectrum method. Using the frequency-stabilized cavity ring-down spectroscopy to study the N2-broadened CO lineshape for R12(3←0) line, six line profiles are used to investigate the relationship between the lineshape parameters. The results show that VP is not proper profile for describing the lineshape, pCqSDNGP is the best profile to obtain the parameters for CO absorption spectrum. |
| Keywords: | metrology carbon monoxide greenhouse gas cavity ring-down absorption spectra |
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