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Laser absorption measurement of atomic oxygen in arc-heater plumes (2001).
| Content Provider | CiteSeerX |
|---|---|
| Author | Komurasaki, K. Sugimine, M. Hosoda, S. Komurasaki, Kimiya Sugimine, Masanori Hosoda, F. Satoshi Arakawal, Yoshihiro |
| Abstract | Diagnostic measurements of atomic oxygen in arc-heater plumes have been conducted by using a diode-laser absorption spectroscopy technique. Number density and translational temperature of atomic oxygen were obtained from the measured absorption line profile at 777.19 nm. As a result, in an argon-oxygen mixture plume at the total enthalpy of 9.0 MJ/kg, high number density of atomic oxygen was observed, though its electronic excitation was found under-populating. In a nitrogen-oxygen mixture plume at the total enthalpy of 19.3 MJ/kg, no absorption has been measured, though in a shock layer formed in the plume, absorption was detected and density distribution has been obtained. The measured atomic oxygen density was much lower than the value expected under equilibrium conditions. |
| File Format | |
| Publisher Date | 2001-01-01 |
| Access Restriction | Open |
| Subject Keyword | Atomic Oxygen Arc-heater Plume Laser Absorption Measurement Mj Kg Total Enthalpy Argon-oxygen Mixture Plume Density Distribution Absorption Line Profile Electronic Excitation Shock Layer Nitrogen-oxygen Mixture Plume Diagnostic Measurement Number Density High Number Density Translational Temperature Diode-laser Absorption Spectroscopy Technique Measured Atomic Oxygen Density Equilibrium Condition |
| Content Type | Text |
