IMECH-IR  > 高温气体动力学国家重点实验室
Combined TDLAS and OES technique for CO concentration measurement in shock-heated Martian atmosphere
Lin X(林鑫); Yu XL(余西龙); Li F(李飞); Zhang SH(张少华); Xin JG; Zhang XY(张新宇); Yu, XL (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China.
Source Publication2ND INTERNATIONAL SYMPOSIUM ON LASER INTERACTION WITH MATTER (LIMIS 2012)
2013
Pages87961J
Conference Name2nd International Symposium on Laser Interaction with Matter (LIMIS)
Conference DateSEP 09-12, 2012
Conference PlaceXian, PEOPLES R CHINA
AbstractThis paper describes the CO concentration and gas temperature distribution measurements behind a strong shock wave in the simulated Martian atmosphere by an optical diagnostic system. The strong shock wave (6.31 ± 0.11 km/s) is established in a shock tube driven by combustion of hydrogen and oxygen. The optical diagnostic system consists of two parts: the optical emission spectroscopy (OES) system and the tunable diode laser absorption spectroscopy (TDLAS) system. For OES system, high temporal and spatial resolution experimental spectra of CN violet system (B-2 Sigma(+)-> X-2 Sigma(+), Delta v = 0 sequence) have been observed. Rotational and vibrational temperature distribution along the shock wave is inferred through a precise analysis of high-resolution experimental spectra. For TDLAS system, a CO absorption line near 2335.778 nm is utilized for detecting the CO concentration using scanned-wavelength direct absorption mode. Combined with these experimental results using OES, CO concentration in the thermal equilibrium region is derived. The detected average CO concentration is 7.46 x 10(12) cm(-3) with the average temperature of 7400 K ± 300 K, which corresponds to the center fractional absorption of 2.7%.
KeywordOptical Emission Spectroscopy (Oes) Tunable Diode Laser Absorption Spectroscopy (Tdlas) Shock Wave Temperature Concentration
WOS IDWOS:000323339600055
DepartmentLHD高温气流激光诊断
ISBN978-0-8194-9639-3
URL查看原文
Indexed ByCPCI-S ; EI
Language英语
Citation statistics
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/47566
Collection高温气体动力学国家重点实验室
Corresponding AuthorYu, XL (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Lin X,Yu XL,Li F,et al. Combined TDLAS and OES technique for CO concentration measurement in shock-heated Martian atmosphere[C]:SPIE-INT SOC OPTICAL ENGINEERING,2013:87961J.
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