Predicted thermal superluminescence in low-pressure air

Predicted thermal superluminescence in low-pressure air

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...

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Veröffentlicht in:arXiv.org 2009-09
Hauptverfasser: Aramyan, A R, Haroyan, K P, Galechyan, G A, Mangasaryan, N R, Nersisyan, H B
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Sprache:eng
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Air temperature
Airframes
Atmospheric entry
Atomic oxygen
Low pressure
Physics - Atmospheric and Oceanic Physics
Physics - Atomic Physics
Reentry
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Haroyan, K P
Galechyan, G A
Mangasaryan, N R
Nersisyan, H B
description 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.
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subjects Air temperature
Airframes
Atmospheric entry
Atomic oxygen
Low pressure
Physics - Atmospheric and Oceanic Physics
Physics - Atomic Physics
Reentry
title Predicted thermal superluminescence in low-pressure air
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