Predicted thermal superluminescence in low-pressure air
| Autor: | A. R. Aramyan, H. B. Nersisyan, N. R. Mangasaryan, K. P. Haroyan, G. A. Galechyan |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2009 |
| Předmět: |
Amplified spontaneous emission
education.field_of_study Materials science Atomic Physics (physics.atom-ph) Population FOS: Physical sciences Radiation Condensed Matter Physics Diatomic molecule Industrial and Manufacturing Engineering Atomic and Molecular Physics and Optics Dissociation (chemistry) Physics - Atomic Physics Physics - Atmospheric and Oceanic Physics Thermal radiation Excited state Thermal Atmospheric and Oceanic Physics (physics.ao-ph) Atomic physics education Instrumentation Physics::Atmospheric and Oceanic Physics |
| Popis: | It is shown that due to the dissociation of the molecular oxygen it is possible to obtain inverted population in low pressure air by heating. As a result of the quenching of the corresponding levels of the atomic oxygen the thermal superluminescent radiation is generated. It has been found that the threshold of the overpopulation is exceeded at the air temperature 2300-3000 K. Using this effect a possible mechanism for the generation of the flashes of the radiation in air observed on the airframe of the space shuttle during its descent and reentry in the atmosphere is suggested. 4 pages, 5 figures |
| Databáze: | OpenAIRE |
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