Cryogenic cell for low-temperature spectral experiments of atmospheric molecules

MA Hong-liang; SUN Ming-guo; CAO Zhen-song; HUANG Yin-bo; WANG Gui-shi; GAO Xiao-ming; RAO

doi:10.3788/OPE.20142210.2617

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Cryogenic cell for low-temperature spectral experiments of atmospheric molecules

更新时间：2020-08-13

- Cryogenic cell for low-temperature spectral experiments of atmospheric molecules
- Optics and Precision Engineering Vol. 22, Issue 10, Pages: 2617-2621(2014)
- 作者机构：
  
  1. 中国科学院大学北京,中国,100049
  2. 中国科学院安徽光学精密机械研究所大气成分与光学重点实验室,安徽合肥,230031
  3. 中国科学院安徽光学精密机械研究所大气物理化学研究室,安徽合肥,230031
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20142210.2617
  CLC： O433.5;O657.3
- Received：22 October 2013，
  
  Revised：16 November 2013，
  
  Published：25 October 2014
- 稿件说明：
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马宏亮, 孙明国, 曹振松等. 适用于大气分子低温光谱实验的低温吸收池[J]. 光学精密工程, 2014,22(10): 2617-2621

MA Hong-liang, SUN Ming-guo, CAO Zhen-song etc. Cryogenic cell for low-temperature spectral experiments of atmospheric molecules[J]. Editorial Office of Optics and Precision Engineering, 2014,22(10): 2617-2621
马宏亮, 孙明国, 曹振松等. 适用于大气分子低温光谱实验的低温吸收池[J]. 光学精密工程, 2014,22(10): 2617-2621 DOI： 10.3788/OPE.20142210.2617.

MA Hong-liang, SUN Ming-guo, CAO Zhen-song etc. Cryogenic cell for low-temperature spectral experiments of atmospheric molecules[J]. Editorial Office of Optics and Precision Engineering, 2014,22(10): 2617-2621 DOI： 10.3788/OPE.20142210.2617.

摘要

设计研制了一套可控温低温吸收池装置

用于系统研究大气分子的低温光谱参数.在之前研制的低温池的基础上

对新研制的低温池的杜瓦瓶与样品池的安装方式

样品池的构造材料以及具体的制冷方法进行了改进

提高了温度稳定性和均匀性.实验显示:在0.5 h监测时间内温度波动小于±0.3 K

温度梯度约为0.03 K/cm.基于新型低温池

结合可调谐半导体激光吸收光谱技术

开展了6 358.654 cm

-1

处二氧化碳低温精细光谱测试

获得了二氧化碳吸收谱线的自展宽系数及其温度依赖系数(

=0.738±0.014)

并与相关文献报道的温度依赖系数进行了对比验证.结果表明

该装置可以满足大气分子低温光谱实验的需要.

Abstract

A new controllable cryogenic cell is designed to provide very useful low temperature spectroscopic parameters for a laser atmospheric transmission project and trace gas detection. On the basis of the existing low temperature cryogenic cell

the new developed cryogenic cell improves the installation of a dewar and a sample cell

cell sample materials and concrete cooling method

and increases temperature stability and uniformity of the cell. The experimental results indicate that the new cryogenic cell shows its temperature fluctuations to be less than ±0.3 K in monitoring time of 0.5 h and the temperature gradient to be about 0.03 K/cm. Based on the developed cryogenic cell

the low temperature spectroscopy of carbon dioxide at 6 358.654 cm

-1

is measured by using tunable diode laser absorption spectroscopy and the self-broadening coefficient and the temperature-dependent exponent (

=0.738±0.014) of the carbon dioxide absorption spectrum are obtained. The results show that the temperature-dependent exponent is in good agreement with that other reports. In conclusion

the cell is able to fulfill the requirements of low temperature absorption spectral experiments of atmospheric molecules.

关键词

Keywords

references

周海金,刘文清,司福祺. 星载大气痕量气体差分吸收光谱仪杂散光抑制[J]. 光学精密工程,2012, 20(11):2331-2337. ZHOU H J, LIU W Q, SI F Q. Stray light suppression of space-borne differential optical absorption spectrometer for monitoring atmospheric trace gas [J]. Opt. Precision Eng., 2012, 20(11):2331-2337. (in Chinese)

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PREDOI-CROSS A, LIU W, MURPHY R, et al.. Measurement and computations for temperature dependences of self-broadened carbon dioxide transitions in the 30012←00001 and 30013← 00001 bands [J]. Journal of Quantitative Spectroscopy & Radiative Transfer, 2010,111:1065-1079.

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