From Event: SPIE Optical Engineering + Applications, 2016
A diode laser sensor based on absorption spectroscopy has been developed for the measurement of spectroscopic parameters of the R(50) line at 5007.787cm-1 (20012<-00001 band) of CO2. Survey spectra of the CO2 R(50) line of CO2 - CO mixture gas with 49.82% CO2 were recorded at different temperatures and pressures through a high temperature measurement system using tunable diode laser absorption spectroscopy. High-resolution measurements of the CO2 R(50) line shape were used to determine collisional broadening full-width of CO2 by CO as a function of pressure and temperature. The collisional broadening coefficients were obtained at temperatures between 323K and 1873K, and the temperature dependent coefficient of the collisional broadening full-width of CO2 by CO was calculated. These parameters are supplement and improvement to the existing database. They are helpful for the detection of CO2 concentration in combustion diagnosis to ensure the accurate inversion of CO2 concentration in the combustion process.
Jiuying Chen, Chuanrong Li, Mei Zhou, Jianguo Liu, and Ruifeng Kan, "Experimental study on mutual broadening coefficient between CO2 and CO and its temperature dependence coefficient under high temperature," Proc. SPIE 9974, Infrared Sensors, Devices, and Applications VI, 99740V (Presented at SPIE Optical Engineering + Applications: September 01, 2016; Published: 19 September 2016); https://doi.org/10.1117/12.2237238.
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Study of self-shadowing effect as a simple means to realize nanostructured thin films and layers with special attentions to birefringent obliquely deposited thin films and photo-luminescent porous silicon