The Number Density of Ground State Atomic Oxygen Measurement by High Sensitive Laser Absorption Spectroscopy using Forbidden Line OI 630nm

2015 ◽  
Author(s):  
Ryo Morita
Keyword(s):  
Absorption Spectroscopy ◽  
Ground State ◽  
Atomic Oxygen ◽  
Number Density ◽  
Laser Absorption Spectroscopy ◽  
Laser Absorption ◽  
Oxygen Measurement

Measurement on Gas Number Density Distribution by Tunable Diode Laser Absorption Spectroscopy

2014 ◽  
Vol 986-987 ◽  
pp. 1523-1526
Author(s):  
Hui Jie Zheng ◽  
Wei Quan
Keyword(s):  
Density Distribution ◽  
Diode Laser ◽  
Absorption Spectroscopy ◽  
Gas Absorption ◽  
Tunable Diode Laser ◽  
Absorption Lines ◽  
Number Density ◽  
Laser Absorption Spectroscopy ◽  
Laser Absorption ◽  
Diode Laser Absorption

An experimental technique was designed to measure the gas number density distribution of alkali vapor by tunable diode laser absorption spectroscopy. The measurement method was developed by scanning multiple gas absorption lines and fitting the experiment data with Lorentz profile to obtain the density. A discretization strategy of the equation for absorption lines is also present here as well as a constrained liner least-square fitting method. A simulation model was set up to reconstruct the two-dimensional distribution of number density and the feasibility of the reconstruction was verified. In the end, this work demonstrates the calculation error of the acquired number density and the distribution. The results indicated that the error would be no more than 5% if the measurement error is less than 9%.

Performance of arcjet-type atomic-oxygen generator by laser absorption spectroscopy and CFD analysis

Vacuum ◽  
2004 ◽  
Vol 73 (3-4) ◽  
pp. 341-346 ◽  
Author(s):  
Makoto Matsui ◽  
Hiroki Takayanagi ◽  
Yasuhisa Oda ◽  
Kimiya Komurasaki ◽  
Yoshihiro Arakawa
Keyword(s):  
Absorption Spectroscopy ◽  
Atomic Oxygen ◽  
Cfd Analysis ◽  
Laser Absorption Spectroscopy ◽  
Laser Absorption ◽  
Oxygen Generator

Derivative Spectrum and Concentration Inversion Algorithm of Tunable Diode Laser Absorption Spectroscopy Oxygen Measurement

2014 ◽  
Vol 34 (4) ◽  
pp. 0430003
Author(s):  
何俊峰 He Junfeng ◽  
阚瑞峰 Kan Ruifeng ◽  
许振宇 Xu Zhenyu ◽  
段连飞 Duan Lianfei ◽  
王小中 Wang Xiaozhong
Keyword(s):  
Diode Laser ◽  
Absorption Spectroscopy ◽  
Tunable Diode Laser ◽  
Derivative Spectrum ◽  
Inversion Algorithm ◽  
Laser Absorption Spectroscopy ◽  
Laser Absorption ◽  
Oxygen Measurement ◽  
Diode Laser Absorption

Investigating Arcjet Mixing and Enthalpy Loss Using Atomic Oxygen Laser Absorption Spectroscopy

AIAA Journal ◽  
2021 ◽  
pp. 1-9
Author(s):  
David Viveros Salazar ◽  
Christopher L. Strand ◽  
Ronald K. Hanson ◽  
Megan E. MacDonald
Keyword(s):  
Absorption Spectroscopy ◽  
Atomic Oxygen ◽  
Laser Absorption Spectroscopy ◽  
Laser Absorption

INTRACAVITY LASER ABSORPTION SPECTROSCOPY OF NO2 AND CH4 COOLED IN A SLIT JET SUPERSONIC EXPANSION

1991 ◽  
Vol 01 (C7) ◽  
pp. C7-471-C7-476
Author(s):  
A. CAMPARGUE ◽  
M. CHENEVIER ◽  
A. DELON ◽  
R. JOST ◽  
F. STOECKEL
Keyword(s):  
Absorption Spectroscopy ◽  
Laser Absorption Spectroscopy ◽  
Supersonic Expansion ◽  
Laser Absorption ◽  
Intracavity Laser
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